Theme 1 Mini-Symposia WESC 2021

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Theme 1 | Mini-Symposia

Mini-Symposium: Advances in Lattice Boltzmann Methods in Wind Energy

Stefan Ivanell, Henrik Asmuth (Uppsala University)

Mini-Symposium: Advances in Lattice Boltzmann Methods in Wind Energy

May 25 13:40 - 15:20 CEST

Session Chairs: Stefan Ivanell (Uppsala University)

(moderators) Henrik Asmuth (Uppsala University)

Time Duration Speaker Title

13:45 - 14:15 25 + 5 min Manfed Krafczyk GPGPU-accelerated Urban Scale Wind Simulations … 14:15 - 14:35 15 + 5 min Alain Schubiger Investigation of the influence of the inlet bounda… 14:35 - 14:55 15 + 5 min Henrik Asmuth Lattice Boltzmann Large-eddy Simulation of Neutral… 14:55 - 15:15 15 + 5 min Helen Schottenhamml A Holistic CPU/GPU Approach for the Actuator Line … Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Array-Array Interactions and Downstream Wake Effects

Rebecca J. Barthelmie, Sara C. Pryor (Cornell University), Charlotte Hasager (DTU Wind Energy)

Mini-Symposium: Array-Array Interactions and Downstream Wake Effects (I)

May 25 15:30 - 17:10 CEST

Session Chairs: Sara C. Pryor (Cornell University)

(moderators) Charlotte Hasager (DTU Wind Energy)

15:30 - 15:50 15 + 5 min Jana Fischereit Farm wakes as seen from mesoscale and high-resolution wake models 15:50 - 16:10 15 + 5 min Jörge Schneemann Large scale offshore wind farm effects measured with scanning lidar

16:10 - 16:30 15 + 5 min Alex Newcombe Efficiencies of offshore wind farms in northern Europe: assessment of the performance of actual wind farms understood in the context of findings from modelling and idealized studies 16:30 - 16:50 15 + 5 min Vasilis Pettas Wind farm wake effects at the Alpha Ventus offshore wind farm

16:50 - 17:10 15 + 5 min Rebecca J. Barthelmie Offshore wakes in the US East coast lease areas Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Array-Array Interactions and Downstream Wake Effects (II)

May 25 17:20 - 19:00 CEST

Session Chairs: Rebecca J. Barthelmie (Cornell University)

(moderators) Charlotte Hasager (DTU Wind Energy)

17:20 - 17:35 12 + 3 min Sara C. Pryor 20% of US electricity from onshore wind: Impacts on wakes, system efficiency and regional climate 17:35 - 17:50 12 + 3 min Julie Lundquist Simulating wind plant wakes in WRF: role of added turbulence kinetic energy

17:50 - 18:05 12 + 3 min Tristan Shepherd Sensitivity of wind turbine wake effects and array-array interactions to wind farm parameterization and model resolution 18:05 - 18:20 12 + 3 min Alex Rybchuk Integration of a 3D Planetary Boundary Layer Scheme and the Fitch Wind Farm Parameterization

18:20 - 18:35 12 + 3 min Nicola Bodini Long-term impacts of wind farms on local meteorology 18:35 - 18:50 12 + 3 min Christina Archer The Jensen wind farm parameterization for the WRF model Session briefing: starting from 17:00 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Data-driven Modeling and Optimization of Wind Farms

Mahdi Abkar (Aarhus University), Jens N. Sørensen (DTU Wind Energy)

Mini-Symposium: Data-driven Modeling and Optimization of Wind Farms (I)

May 25 15:30 - 17:10 CEST

Session Chairs: Mahdi Abkar (Aarhus University)

(moderators) Jens N. Sørensen (DTU Wind Energy)

15:35 - 15:50 12 + 3 min Helen Sheehan (University of Bristol)Predicting Linearised Wind Resource Grids using Convolutional Neural Networks in Style Transfer and Encoder-Decoder Based Architectures 15:50 - 16:05 12 + 3 min Julia Steiner (TU Delft) Data-driven RANS closure for wind turbine wakes under neutral conditions

16:05 - 16:20 12 + 3 min Robert Braunbehrens (Technical University of Munchen)Identification of heterogeneous wind farm flow features from SCADA Data 16:20 - 16:35 12 + 3 min Simon Sejer Pedersen (Aarhus University)Toward wind farm modeling via physics-informed machine learning Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Data-driven Modeling and Optimization of Wind Farms (II)

May 25 17:20 - 19:00 CEST

Session Chairs: Mahdi Abkar (Aarhus University)

(moderators) Jens N. Sørensen (DTU Wind Energy)

17:20 - 17:35 12 + 3 min Nicola Bodini (NREL) Lowering long-term energy estimate uncertainty through better wind plant power curves 17:35 - 17:50 12 + 3 min Amy Hodgkin (Imperial College London)Implications of ambient shear and thermal stratification on wind turbine near-wake dynamics

17:50 - 18:05 12 + 3 min Giacomo Valerio Iungo (UT Dallas)Machine Learning Modeling of Wind Turbine Wakes: Clustering of LiDAR measurements and random-forest predictions 18:05 - 18:20 12 + 3 min Abhinav Prakash (Texas A&M University)Data Science for Wind Energy: An R package for facilitating wind farm operations

Session briefing: starting from 17:00 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Entrainment and Blockage Effects on Large Offshore Wind Farms

Tuhfe Göçmen, Jake Badger (DTU Wind Energy)

Mini-Symposium: Entrainment and Blockage Effects on Large Offshore Wind Farms (I)

May 27 13:40 - 15:20 CEST

Session Chairs: Tuhfe Göçmen (DTU Wind Energy)

(moderators) Jake Badger (DTU Wind Energy)

13:45 - 14:05 15 + 5 min Bempedelis Turbulent entrainment in large wind plants

14:05 - 14:25 15 + 5 min Sanchez Gomez The induction zone of a wind farm in stably stratified flow 14:25 - 14:45 15 + 5 min Keane Wind farm cumulative induction zone effect modelling with CFD

14:45 - 15:05 15 + 5 min Riechert Measuring Wind Farm Scale Blockage – First results from a 12-month scanning lidar campaign at a German offshore wind farm Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Entrainment and Blockage Effects on Large Offshore Wind Farms (II)

May 27 15:30 - 17:10 CEST

Session Chairs: Tuhfe Göçmen (DTU Wind Energy)

(moderators) Jake Badger (DTU Wind Energy)

15:35 - 15:50 12 + 3 min Mauz An analytical solution for wind deficit decay behind a wind energy converter and wind energy parks using momentum conservation validated by airborne data 15:50 - 16:05 12 + 3 min Platis The influence of offshore wind farms on the latent heat flux

16:05 - 16:15 8 + 2 min Giebel Train2Wind, or how large is an infinite wind farm?

16:15 - 16:25 8 + 2 min Duan Wake flows in an experimentally-modeled offshore wind farm

16:25 - 16:35 8 + 2 min Souaiby Atmospheric Boundary Layer Interactions with Large Wind Farms: A Large Eddy Simulation Study 16:35 - 16:45 8 + 2 min Garcia How can we assure that offshore wind farms will be efficient in 2050?

16:45 - 16:55 8 + 2 min Owda Analysis of wind wakes for a cluster of offshore wind farms from construction to operation date using satellite observations 16:55 - 17:05 8 + 2 min Fraumann Scientific Collaboration in Wind Energy PhD Training Networks

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: IEA Task 31 "Wakebench" Wind Farm Flow Model Validation

Javier Sanz Rodrigo (CENER), Patrick Moriarty (NREL)

Mini-Symposium: IEA Task 31 "Wakebench" Wind Farm Flow Model Validation (I)

May 27 15:30 - 17:10 CEST

Session Chairs: Javier Sanz Rodrigo (CENER)

(moderators) Patrick Moriarty (NREL)

15:35 - 15:55 15 + 5 min Herbert Owen Large-eddy simulation of atmospheric boundary layer problems with Alya

15:55 - 16:15 15 + 5 min Matias Avila Diurnal cycle simulation of thermally stratified flows over forested complex terrain

16:15 - 16:35 15 + 5 min Gang Huang Evaluation of numerical site calibration results for wind turbine power performance measurement: the Alaiz case

16:35 - 16:55 15 + 5 min Kenneth Brown Higher-Order Validation Methodology for Actuator Line LES Wake Predictions using Nacelle-Mounted LiDAR Measurements Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: IEA Task 31 "Wakebench" Wind Farm Flow Model Validation (II)

May 28 15:30 - 17:10 CEST

Session Chairs: Javier Sanz Rodrigo (CENER)

(moderators) Patrick Moriarty (NREL)

15:35 - 15:55 15 + 5 min Patrick Moriarty The American Wake Experiment (AWAKEN): Overview and Status Update

15:55 - 16:15 15 + 5 min Stefano Letizia Farm-to-Farm interactions investigated through a WRF-RANS framework for the AWAKEN/ARISE project

16:15 - 16:35 15 + 5 min Alan Hsieh Application of Multilevel-Multifidelity Uncertainty Quantification Towards Multi-turbine Interaction and Wake Characterization 16:35 - 16:55 15 + 5 min Stefano Letizia LiSBOA: a framework for optimal design of LiDAR scanning strategies and statistics retrieval

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Interactions of Large-Scale Offshore Wind Farms with the Marine Atmospheric Boundary Layer of the German Bight Martin Dörenkämper (Fraunhofer IWES), Stefan Emeis (Karlsruhe Institute of Technology), Nicolai Nygaard ( Ørsted)

Mini-Symposium: Interactions of Large-Scale Offshore Wind Farms with the Marine Atmospheric Boundary Layer of the German Bight

May 26 13:40 - 15:20 CEST

Session Chairs: Martin Dörenkämper (Fraunhofer IWES)

(moderators) Stefan Emeis (Karlsruhe Institute of Technology)

Nicolai Nygaard (Ørsted)

13:55 - 14:10 12 + 3 min Martin Dörenkämper Improving mesoscale resource assessment in coastal areas by aircraft measurements and LES-studies - recent results from the X-Wakes project 14:10 - 14:25 12 + 3 min Beatriz Cañadillas Wind-farm blockage in engineering models: A comparison with LES simulations

14:25 - 14:40 12 + 3 min Bedassa R. Cheneka Potential Changes in Wind Power Ramp Behaviour under a Projected Climate Change Scenario 14:40 - 14:55 12 + 3 min Sara Porchetta Surface wave influences on offshore wind turbines: a coupled atmosphere-wave model investigation 14:55 - 15:10 12 + 3 min Lukas Vollmer Influence of large-scale circulation effects on AEP calculations

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Lidars and floating wind energy – Collaboration of Innovative Training Networks LIKE and FLOAWER Jakob Mann (DTU Wind Energy), Ines Wuerth, Oliver Bischoff (University of Stuttgart)

Mini-Symposium: Lidars and floating wind energy – Collaboration of Innovative Training Networks LIKE and FLOAWER (I)

May 28 13:40 - 15:20 CEST

Session Chairs: Jakob Mann (DTU Wind Energy)

(moderators) Ines Wuerth (University of Stuttgart)

Oliver Bischoff (University of Stuttgart)

13:40 - 13:50 10 min Jakob Mann Overview of the PhD network LIKE

13:50 - 14:00 10 min Sandrine Aubrun Overview of the Innovative Training Network FLOAWER

14:00 - 14:15 12 + 3 min Haichen Zuo Validation of Aeolus Wind Observations with in-situ Measurements and Reanalysis Dataset in Oceania 14:15 - 14:30 12 + 3 min Jan Markus Diezel Atmospheric boundary layer characterization for airborne wind energy applications

14:30 - 14:45 12 + 3 min Daniel Hatfield Exploring ferry lidar data through scatterometer winds

14:45 - 15:00 12 + 3 min Ana Garcia Correa Wind resource assessment at SEM REV test site through spatially-distributed instrumentation 15:00 - 15:15 12 + 3 min Priscila M. S. Orozco Normalized-wake characterization by long-range lidars

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Lidars and floating wind energy – Collaboration of Innovative Training Networks LIKE and FLOAWER (II)

May 28 15:30 - 17:10 CEST

Session Chairs: Jakob Mann (DTU Wind Energy)

(moderators) Ines Wuerth (University of Stuttgart)

Oliver Bischoff (University of Stuttgart) Sandrine Aubrun (École Centrale de Nantes)

15:35 - 15:50 12 + 3 min Thibault Desert Error quantification as a function of metocean conditions and correction of wave induced turbulence intensity bias assessed with a Floating LiDAR System 15:50 - 16:05 12 + 3 min Zhaoyu Zhang LIDAR Assisted Model Predictive Control of Wind Turbine

16:05 - 16:20 12 + 3 min Hugo Rubio Evaluating the performance of ship-based lidar measurements by comparing the data from a short- and long-range lidar profiler in the Atlantic Ocean 16:20 - 16:35 12 + 3 min Lukas Pauscher Turbulence measurements using a triple-Doppler lidar technique

16:35 - 16:50 12 + 3 min Liqin Jin Compacted measurement volume of continuous-wave Lidar with a novel optical configuration 16:50 - 17:05 12 + 3 min Shahbaz Pathan Robotic Lidar Wind Flow and Velocity Measurements

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Lidars and Numerical Models – How They Correspond and Interact

Julia Gottschall (Fraunhofer IWES), Peter Clive (Black & Veatch)

Mini-Symposium: Lidars and Numerical Models – How They Correspond and Interact (I)

May 26 15:30 - 17:10 CEST

Session Chairs: Julia Gottschall (Fraunhofer IWES)

(moderators) Peter Clive (Black & Veatch)

15:35 - 15:50 12 + 3 min Julia Gottschall What is more accurate – a wind lidar measurement or the ouput of a numerical model? 15:50 - 16:05 12 + 3 min Lu Zhan Optimal tuning of engineering wake models through LiDAR measurements

16:05 - 16:20 12 + 3 min Arjun Anantharaman Scanning lidar and engineering models: Improved prediction of offshore wind farm wake development 16:20 - 16:35 12 + 3 min Aidan Keane Validation of an analytical full wind turbine wake model with Galion Lidar

16:35 - 16:50 12 + 3 min Ishaan Sood Comparison of Large Eddy Simulations against measurements from the Lillgrund offshore windfarm

16:50 - 17:05 12 + 3 min Christiane Montavon Modelling Wind Farm Scale Blockage – First results from a 12-month scanning lidar campaign at a German offshore wind farm Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Lidars and Numerical Models – How They Correspond and Interact (II)

May 26 17:20 - 19:00 CEST

Session Chairs: Peter Clive (Black & Veatch)

(moderators) Julia Gottschall (Fraunhofer IWES)

17:20 - 17:35 12 + 3 min Balthazar Sengers Optimal lidar scanning pattern for wake composition under yaw misalignment 17:35 - 17:50 12 + 3 min Mithu Debnath Turbulence intensity corrections of pulse-based profiling Doppler lidars

17:50 - 18:05 12 + 3 min Lindsay Sheridan Assessment of Offshore Model Wind Speed Performance in the Northwestern Atlantic Ocean Using Lidar Buoy Data 18:05 - 18:20 12 + 3 min Mike Optis Validation of Novel Wind Speed Extrapolation Models using Offshore Floating Lidar

18:20 - 18:35 12 + 3 min Peter Clive The implications of emerging data sharing protocols for the integration of lidar measurements and wind flow models Session briefing: starting from 17:00 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: The Pragmatic Choice of Wind Models for Wind Resource Assessment

Sarah Barber, Florian Hammer (Eastern Switzerland University of Applied Sciences)

Mini-Symposium: The Pragmatic Choice of Wind Models for Wind Resource Assessment

May 26 15:30 - 17:10

Session Chairs: Sarah Barber (Eastern Switzerland University of Applied Sciences) (moderators) Florian Hammer (Eastern Switzerland University of Applied Sciences)

15:30 - 15:50 15 + 5 min Sarah Barber The Pragmatic Choice of Wind Model in Complex Terrain – Decision Tool Development 15:50 - 16:10 15 + 5 min Andreas Rumpf The effect of flow turning on Annual Energy Production estimations in complex terrain 16:10 - 16:30 15 + 5 min Sebastian Remmler Wind-speed time series prediction at the Perdigão site using “E-Wind”

16:30 - 16:50 15 + 5 min Federico Bernardoni Wind resource assessment over real complex topography: a procedure to integrate field data with high-fidelity numerical simulations 16:50 - 17:10 15 + 5 min Kartik Venkatraman Influence of thermal stability and forest canopy in non-neutral atmospheric boundary modelling over complex terrain

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Wind Farm Control

Gregor Giebel (DTU Wind Energy), Jan-Willem van Wingerden (TU Delft), Paul Fleming (NREL), Johan Meyers (KU Leuven), Katherine Dykes (DTU Wind Energy), Carlo L. Bottasso (TU Munich), Paul Veers (NREL)

Mini-Symposium: Wind Farm Control (I)

May 26 17:20 - 19:00

Session Chairs: Carlo L. Bottasso (TU Munich)

(moderators) Jan-Willem van Wingerden (TU Delft)

17:25 - 17:40 12 + 3 min Marcus Becker Maturing FLORIS towards a Dynamic Wind Farm Model: The inclusion of time-dependent wake propagation, time-varying atmospheric conditions and heterogeneous inflow conditions 17:40 - 17:55 12 + 3 min Rafael Mudafort The Modularized FLORIS Framework for Wind Farm Controls and Wake Modeling

17:55 - 18:10 12 + 3 min Paul Fleming Results of a validation campaign on wake steering using static yaw angles

18:10 - 18:25 12 + 3 min Thomas Duc Results from a Wake Steering Wind Farm Control Experiment at a Commercial Wind Farm: Investigating the Wind Speed Dependence of Wake Steering Performance 18:25 - 18:40 12 + 3 min Tuhfe Göçmen FarmConners Wind Farm Flow Control Benchmark Results

18:40 - 18:55 12 + 3 min Michael Smailes Wind Farm Flow Control in Flexible Electricity Markets – Initial Results of FarmConners Market Showcases Session briefing: starting from 17:00 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Wind Farm Control (II)

May 27 13:40 - 15:20

Session Chairs: Katherine Dykes (DTU Wind Energy)

(moderators) Paul Fleming (NREL)

13:45 - 14:00 12 + 3 min Christopher Bay Increasing Turbine Density for Wind Plants Through Combined Layout and Yaw Optimization 14:00 - 14:20 15 + 5 min Ju Feng Assessing the AEP increase potential of wind farm control by wake steering

14:20 - 14:40 15 + 5 min Til Kristian Vrana Electrical design and control for grid code compliance and ancillary service provision 14:40 - 15:00 15 + 5 min Lars Landberg Bankability of Wind Farm Control

15:00 - 15:20 15 + 5 min Elena Cantero Wind farm performance optimization from design phase Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Wind Farm Control (III)

May 27 15:30 - 17:10

Session Chairs: Gregor Giebel (DTU Wind Energy)

(moderators) Johan Meyers (KU Leuven)

15:35 - 15:50 12 + 3 min Dan Houck Mid-fidelity simulations and comparisons of five techniques for axial induction control of a wind turbine 15:50 - 16:05 12 + 3 min Ervin Bossanyi Simple induction control scheme for wind farms

16:05 - 16:20 12 + 3 min Mariana Montenegro MonteroExploiting vortex roll-up mechanism to promote wake recovery through a periodic and asymmetric collective pitch motion 16:20 - 16:35 12 + 3 min Jonas Schmidt Adaptive time-series based wind farm optimization

16:35 - 16:50 12 + 3 min Kenneth Brown Towards Dynamic Wind Turbine Wake Control for Lowered Cost of Energy

16:50 - 17:05 12 + 3 min Majid Bastankhah Curled wake shape evolution downstream of yawed wind turbines: a theoretical study Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Wind Power Forecasting

Gregor Giebel (DTU Wind Energy), Corinna Möhrlen (WEPROG), John Zack (UL Renwables), Ricardo J. Bessa (INESC TEC)

Mini-Symposium: Wind Power Forecasting (I)

May 25 13:40 - 15:20

Session Chairs: Corinna Möhrlen (WEPROG)

(moderators) Ricardo J. Bessa (INESC TEC)

13:40 - 14:00 15 + 5 min Gregor Giebel IEA Wind Task 36 - Forecast and Usage Improvements

14:00 - 14:20 15 + 5 min George Kariniotakis Research directions and results in the Smart4RES project for improving renewable energy forecasting 14:20 - 14:40 15 + 5 min Brice Olivier Improving operational wind power forecasts by downscaling wind forecasting in complex terrains using WRF 14:40 - 15:00 15 + 5 min Jaime Liew A streaming dynamic mode decomposition approach to wind farm forecasting

15:00 - 15:20 15 + 5 min Akylas Stratigakos Short-term trading of wind energy production using data-driven prescriptive optimization Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 1 | Mini-Symposia

Mini-Symposium: Wind Power Forecasting (II)

May 25 15:30 - 17:10

Session Chairs: Gregor Giebel (DTU Wind Energy)

(moderators) John Zack (UL Renewables)

15:30 - 15:50 15 + 5 min Rosemary Tawn Forecast combination and adaptation for improved ramp forecasts

15:50 - 16:10 15 + 5 min Nicola Bodini Machine learning and Analog Ensemble techniques for temporal extrapolation of long-term wind resource uncertainty 16:10 - 16:30 15 + 5 min Andrew Kumler Probabilistic Day-Ahead Forecasting using an Analog Ensemble Approach for Wind Farm Grid Services

16:30 - 16:50 15 + 5 min Ricardo Bessa Integration of wind energy uncertainty in predictive grid management: can we make it simple?

16:50 - 17:10 15 + 5 min Corinna Möhrlen Overcoming psychological Barriers of using Probabilistic Power Forecasting with Games and Experiments Session briefing: starting from 15:10 CEST

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Theme 1 | Regular Sessions

Wind Resource Assessment (I)

May 25 13:40 - 15:20

Session Chairs: Doron Callies (Fraunhofer IEE, University of Kassel)

(moderators) Lars Landberg (DNV GL)

13:45 - 14:00 12 + 3 min Schneider New wind atlas generation for Europe and Germany based on ERA5

14:00 - 14:15 12 + 3 min Olsen A model-chain for wind resource assessment in complex terrain via statistical-dynamical downscaling using dynamical tendencies for meso-micro coupling 14:15 - 14:30 12 + 3 min Floors Integrated wind resource modelling with WRF and PyWAsP

14:30 - 14:45 12 + 3 min Svenningsen Calculation of a global atlas of expected wind turbine design class

14:45 - 15:00 12 + 3 min Duran Wind resource assessment using a novel meso-microscale coupling framework based on two-level self-organized maps clustering 15:00 - 15:15 12 + 3 min Hahmann Optimising the WRF model configuration for the Mexican Wind Atlas

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Theme 1 | Regular Sessions

Wind Resource Assessment (II)

May 25 17:20 - 19:00 CEST

Session Chairs: Lars Landberg (DNV GL)

(moderators) Ashim Giyanani (Fraunhofer IWES)

17:25 - 17:40 12 + 3 min Callies Optimization of wind measurements for resource assessment using the new LiMeS tool and the lidar availability map

17:40 - 17:55 12 + 3 min Andrew Black Modelisation of Lidar deviation to point measurement: model, validation with onsite data and demonstration of more accurate wind field retrieval method 17:55 - 18:10 12 + 3 min Wildmann Measurement of sub-mesoscale structures in the atmospheric boundary layer with Doppler wind lidar during the FESSTVaL campaign

18:10 - 18:25 12 + 3 min Kidambi Synchronised WindScanner Measurements Between Two Closely Spaced Wind Turbines 18:25 - 18:40 12 + 3 min Jäger Uncertainties of multiple-point measurements with multi lidar

18:40 - 18:55 12 + 3 min Wolken-Möhlmann The MALIBU concept: Can we assess the uncertainty of a floating lidar system for a new location using existing trial data? Session briefing: starting from 17:00 CEST

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Theme 1 | Regular Sessions

Wind Resource Assessment (III)

May 26 15:30 - 17:10 CEST

Session Chairs: Sandra Schwegmann (Fraunhofer IWES)

(moderators) (NN) ( - )

15:35 - 15:50 12 + 3 min Emeis The analytical wind farm efficiency and wake model EFFWAKE

15:50 - 16:05 12 + 3 min Nørkær Sørensen Simple model for assessment of energy production and costs of offshore wind farms

16:05 - 16:20 12 + 3 min Minz To what extent can the Kinetic Energy Budget of the Atmosphere approach explain the reduction in offshore generation efficiency of developments planned in the German Bight by 2050 16:20 - 16:35 12 + 3 min Ollier The interaction of naturally occurring atmospheric gravity waves with an offshore wind farm

16:35 - 16:50 12 + 3 min Adib Horizontal Roll Vortices in RANS simulations of stably stratified atmospheric boundary layer 16:50 - 17:05 12 + 3 min Kara Extreme Winds and Risk Analysis in Turkey based on the Different Statistical Methods Session briefing: starting from 15:10 CEST

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Theme 1 | Regular Sessions

Wind Resource Assessment (IV)

May 27 13:40 - 15:20 CEST

Session Chairs: Bjarke Tobias Olsen (DTU Wind Energy)

(moderators) Bughsin Djath (Helmholtz Center Hereon)

13:45 - 14:00 12 + 3 min Nielsen Long-term correction and conditional time series simulation by a diffusion-based transformation

14:00 - 14:15 12 + 3 min Schwegmann Optimizing MCP-based gap filling with Machine Learning approaches using Hyperparameter tuning and feature engineering 14:15 - 14:30 12 + 3 min Li Automated identification of Dunkelflaute events: a convolutional neural network-based autoencoder approach

14:30 - 14:45 12 + 3 min Arnold A Use Case for a Numerical Self Consistency Test in Preparation of a Power Curve Measurement Site 14:45 - 15:00 12 + 3 min Giyanani Characterizing the wind field by deriving key parameters from in-situ measurements at Testfeld BHV 15:00 - 15:15 12 + 3 min Goretti Estimation of wind resources and wind energy production using the ERA5 reanalysis data

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Theme 1 | Regular Sessions

Wind Resource Assessment (V)

May 28 15:30 - 17:10 CEST

Session Chairs: Julia Gottschall (Fraunhofer IWES)

(moderators) Norman Wildmann (German Aerospace Center - DLR)

15:35 - 15:50 12 + 3 min Djath Study of Coastal effects relevant for the offshore windfarm sector using spaceborne synthetic aperture radar data 15:50 - 16:05 12 + 3 min de Montera Generating wind ressources maps at hub height with SAR and machine learning

16:05 - 16:20 12 + 3 min Karagali Using Earth Observation ocean winds for wind energy

16:20 - 16:35 12 + 3 min Borgers Evaluation of a high-resolution dynamical downscaling of ERA5 with COSMO-CLM for the North Sea

16:35 - 16:50 12 + 3 min Dayal 10-year mesoscale wind resource assessment of the small island developing state of Fiji using the Weather Research and Forecasting (WRF) model Session briefing: starting from 15:10 CEST

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Theme 1 | Regular Sessions

Large Scale Wind Farm Wake Modeling

May 26 17:20 - 19:00 CEST

Session Chairs: Sara C. Pryor (Cornell University)

(moderators) Rebecca Barthelmie (Cornell University)

17:25 - 17:40 12 + 3 min Rosencrans Quantifying Uncertainty of Wake Impacts in US Offshore Wind Resource Areas

17:40 - 17:55 12 + 3 min Antonini How atmospheric pressure gradients and Coriolis forces control the power density of large wind farms 17:55 - 18:10 12 + 3 min Starke Analysis of a wind farm with a hybrid (aligned-random) pattern using the Area Localized Coupled (ALC) model 18:10 - 18:25 12 + 3 min Dong Evaluation on the predictive capability of actuator disk model in simulating wakes of turbines of different designs 18:25 - 18:40 12 + 3 min Li Effects of vertical shear on the wake centerline deflection behind a non-yawed wind turbine

18:40 - 18:55 12 + 3 min Churchfield The “Wake-Diffusion” Rotor: A Wake-Mitigation Concept Session briefing: starting from 17:00 CEST

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Theme 1 | Regular Sessions

Wind Farm Modeling & Analytical Approaches

May 27 13:40 - 15:20 CEST

Session Chairs: Andrea Hahmann (DTU Wind Energy)

(moderators) Sarah Barber (East Switzerland University of Applied Sciences)

13:45 - 14:00 12 + 3 min Fleming Analytical solution for the cumulative wake of wind turbines in wind farms 14:00 - 14:15 12 + 3 min Ali Raza Ashgar A Dynamic Wind Farm Wake Model Implemented in OpenFAST

14:15 - 14:30 12 + 3 min Pedersen A global blockage model for wind farm development

14:30 - 14:45 12 + 3 min Narciso Vortex displacement in the curled wake model: Implementation and impact evaluation

14:45 - 15:00 12 + 3 min Anas Abdulrahim Comparison of analytical wake model predictions with experimental data for a non-uniform porous disc for uniform and non-uniform inflow conditions 15:00 - 15:15 12 + 3 min Fontella Understanding the wake of floating wind turbines with high-fidelity wind tunnel experiments

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Theme 1 | Regular Sessions

High-Fidelity Wake Modeling

May 25 13:40 - 15:20 CEST

Session Chairs: Xiaoli Larsén (DTU Wind Energy)

(moderators) Pierre-Elouan Réthoré (DTU Wind Energy)

13:45 - 14:00 12 + 3 min Lanzilo A model for wind-farm power prediction in presence of meso-scale background gradients 14:00 - 14:15 12 + 3 min Stieren Large eddy simulations of wind farm cluster wakes

14:15 - 14:30 12 + 3 min Muscari On the free stream velocity sampling in ActuatorLine Models: review and assessment with respect to wake description 14:30 - 14:45 12 + 3 min Abkar Model-form uncertainty quantification in RANS simulations of wind turbine wakes

14:45 - 15:00 12 + 3 min Hanssen-Bayer Comparison of wake flow, power and load measurements from three mid-fidelity wake models based on the DWM approach 15:00 - 15:15 12 + 3 min Reinwardt Validation of different multiple wake models for wind turbines in combination with the DWM model

(same virtual room)

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Theme 1 | Regular Sessions

Wakes Models and Data

May 26 15:30 - 17:10 CEST

Session Chairs: Rebecca Barthelmie (Cornell University)

(moderators) Sara C. Pryor (Cornell University)

15:35 - 15:50 12 + 3 min Neunaber Application of bluff-body wake models to wind turbine wakes 15:50 - 16:05 12 + 3 min Sebastini Power production of five aligned wind turbines

16:05 - 16:20 12 + 3 min Bastine Investigating the evolution of wake turbulence with nacelle-based lidar measurements 16:20 - 16:35 12 + 3 min Vinnes Experimental assessment of the velocity field in a wind farm induction zone

16:35 - 16:50 12 + 3 min Murcia Leon Data-driven offshore cluster wake effects for wind energy hub design Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 1 | Regular Sessions

Mesoscale Modelling and Forecasting (I)

May 26 13:40 - 15:20 CEST

Session Chairs: Gerald Steinfeld (ForWind, University of Oldenburg) (moderators) Balthazar Sengers (ForWind, University of Oldenburg)

13:45 - 14:00 12 + 3 min Yakoub Short Term Power Forecasts for Distributed Wind Turbines Using Support Vector Regression 14:00 - 14:15 12 + 3 min Luzia Correlations in NEWA time series: Evaluation and model sensitivity

14:15 - 14:30 12 + 3 min Pérez-Landa Impact study of WFIP2 results on an operational wind energy forecasting system

14:30 - 14:45 12 + 3 min Friedrich Multiscale stochastic refinement and stochastic interpolation of sparse time signals and fields

14:45 - 15:00 12 + 3 min Neirynck How do mesoscale weather systems interact with off-shore wind farms: A study for the Kattegat (Denmark, Sweden) with the mesoscale model COSMO-CLM and satellite scatterometer data 15:00 - 15:15 12 + 3 min Devesse The influence of free-atmosphere wave reflection on wind-farm gravity-wave interaction

(same virtual room)

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Theme 1 | Regular Sessions

Mesoscale Modelling and Forecasting (II)

May 26 17:20 - 19:00 CEST

Session Chairs: Julie K. Lundquist (NREL, University of Colorado)

(moderators) Martin Dörenkämper (Fraunhofer IWES)

17:25 - 17:40 12 + 3 min Floors Satellite-based estimation of roughness lengths and displacement heights for wind resource modelling 17:40 - 17:55 12 + 3 min Redfern The role of sea surface temperature forcing in offshore wind energy forecasting

17:55 - 18:10 12 + 3 min Adib Time series based approach for wind flow prediction

18:10 - 18:25 12 + 3 min Manero Forecastability of a wind site based on meteorological time series structure 18:25 - 18:40 12 + 3 min Putri Wind velocity spectra at Vindeby Offshore Wind Farm

18:40 - 18:55 12 + 3 min Basse Seasonal Effects in the Long-Term Correction of Short-Term Wind Measurements Session briefing: starting from 17:00 CEST

(same virtual room)

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Theme 1 | Regular Sessions

Minute-Scale Forecasting and Power Fluctuations

May 28 13:40 - 15:20 CEST

Session Chairs: Detlev Heinemann (ForWind, University of Oldenburg)

(moderators) Ásta Hannesdóttir (DTU Wind Energy)

13:45 - 14:00 12 + 3 min Seifert Analysing correlations of power output fluctuations of offshore wind turbines based on high resolution SCADA data 14:00 - 14:15 12 + 3 min Pichault Minute-Scale Forecasting of Wind Power at the Wind Farm Scale Using Long-range Doppler Lidar

14:15 - 14:30 12 + 3 min Brugger Doppler LiDAR observations of wake meandering at a utility scale wind turbine

14:30 - 14:45 12 + 3 min Wuerth Minute-scale forecasting using a long–range lidar: Lessons learned from onshore and offshore campaigns

14:45 - 15:00 12 + 3 min Theuer Lidar-based minute-scale wind speed and power forecast of free-stream and wake-influenced offshore wind turbines 15:00 - 15:15 12 + 3 min Rangaraj A Case study on long-term wind speed forecasting models suitable for Indian weather condition

(same virtual room)

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Theme 1 | Regular Sessions

Wind Farm Design and Optimization

May 25 17:20 - 19:00 CEST

Session Chairs: Johan Meyers (KU Leuven)

(moderators) Tobias Meyer (Fraunhofer IWES)

17:25 - 17:40 12 + 3 min Vahidi Wind-turbine wake expansion in the atmospheric boundary layer; A physics-based analytical model 17:40 - 17:55 12 + 3 min Hannah Johlas Computational Investigation of Wind Turbine Tilt Steering

17:55 - 18:10 12 + 3 min Novais A low computational cost framework for the testing of wind farm control strategies through wake steering 18:10 - 18:25 12 + 3 min Valotta Rodrigues Wind Farm Optimization in PyWake/TOPFARM Using Gradients and Smart-Start Algorithms

18:25 - 18:40 12 + 3 min Allen Progress on optimizing wind farms and rotor designs using adjoints 18:40 - 18:55 12 + 3 min Sogachev Airflow modelling over hybrid solar/wind farm

(same virtual room)

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Theme 1 | Regular Sessions

Meteorology and Microscale Modelling (I)

May 27 15:30 - 17:10 CEST

Session Chairs: Laura Lukassen (ForWind, University of Oldenburg) (moderators) Gerald Steinfeld (ForWind, University of Oldenburg)

15:35 - 15:50 12 + 3 min Kale Multiscale wind turbine wake modeling within a wind farm using the WRF-LES model: An application to the Lillgrund offshore wind farm

15:50 - 16:05 12 + 3 min Maas Wake properties and power output of very large wind farms for different meteorological conditions and turbine spacings: A large-eddy simulation case study for the German Bight 16:05 - 16:20 12 + 3 min Nagarada Gadde Large eddy simulations of interaction between low-level jet and wind farm

16:20 - 16:35 12 + 3 min Quon Measurement-Driven Large-Eddy Simulation of a Wind Turbine Array during a Wake Steering Field Campaign 16:35 - 16:50 12 + 3 min Allaerts A comparison of mesoscale-to-microscale coupling techniques for atmospheric flows over flat terrain 16:50 - 17:05 12 + 3 min Quon Mesocale-to-microscale coupled simulations of low-level jets along US North Atlantic Coastline Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 1 | Regular Sessions

Meteorology and Microscale Modelling (II)

May 28 13:40 - 15:20 CEST

Session Chairs: Stefan Ivanell (Uppsala University)

(moderators) Gonzalo P. Navarro Diaz (Uppsala University)

13:45 - 14:00 12 + 3 min Tene Hedje Large Eddy Simulation of HAWT and VAWT performances in the vicinity of a building

14:00 - 14:15 12 + 3 min Liu Effects of atmospheric stability on the performance of a wind turbine located behind a three-dimensional hill 14:15 - 14:30 12 + 3 min Vigny Dynamic mesh adaptation to capture wind turbine wakes during LES simulations

14:30 - 14:45 12 + 3 min Yilmaz Nested high-resolution atmospheric boundary layer simulations using WRF-LES for Perdigão 14:45 - 15:00 12 + 3 min Segalini Modelling biases in the simulation of wind farms over forest canopies

15:00 - 15:15 12 + 3 min Basu Simulation of wind field with three back to back actuator discs using parallel numerical algorithms Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 1 | Regular Sessions

Wakes and Farms

May 28 15:30 - 17:10 CEST

Session Chairs: Dries Allaerts (TU Delft)

(moderators) Jörge Schneemann (ForWind, University of Oldenburg)

15:35 - 15:50 12 + 3 min Strickland Effect of atmospheric thermal stratification on wind farm blockage 15:50 - 16:05 12 + 3 min Englberger The impact of the rotational direction of a wind turbine on its wake

16:05 - 16:20 12 + 3 min Narasimhan Effect of wind veer on the counter-rotating vortex pair behind yawed wind turbines

16:20 - 16:35 12 + 3 min Neunaber Dependence of the evolution of wind turbine wakes on the atmospheric turbulence: A LiDAR field study 16:35 - 16:50 12 + 3 min Navarro Diaz Actuator line model development using simplified methods for forces calculation

(same virtual room)

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Theme 2 | Mini-Symposia

Mini-Symposium: Coupled Dynamics and Optimal Design

Raimund Rolfes (ForWind, Leibniz University Hannover), Cristian G. Gebhardt (Univ. of Bergen, Bergen Offshore Wind Center), Jason Jonkman (NREL), Erik Lund (Aalborg University)

Mini-Symposium: Coupled Dynamics and Optimal Design

May 28 15:30 - 17:10 CEST

Session Chairs: Cristian G. Gebhardt (University of Bergen, Bergen Offshore Wind Center)

(moderators) Jason Jonkman (NREL)

15:35 - 15:55 15 + 5 min Jason Jonkman Influence of Wind Turbine Design Parameters on Linearized Physics-Based Models Using OpenFAST

15:55 - 16:15 15 + 5 min Christian Hente A new aeroelastic simulation framework for wind turbines based on multibody systems, geometrically exact finite elements and the nonlinear unsteady vortex-lattice method 16:15 - 16:35 15 + 5 min Daniel Schuster Aero-hydroelastic Modeling of Wind Turbines: A Review on the State of the Art

16:35 - 16:55 15 + 5 min Frank Lemmer FlexDyn – A new OpenFAST Structural Dynamics Module for a General, User-Defined Wind Turbine Topology

Session briefing: starting from 15:10 CEST (same virtual room)

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Theme 2 | Mini-Symposia

Mini-Symposium: Impact of Atmospheric and Wake-Induced Turbulence on Wind Turbine Loads

Frédéric Blondel (IFPEN), Jason Jonkman (NREL)

Mini-Symposium: Impact of Atmospheric and Wake-Induced Turbulence on Wind Turbine Loads

May 25 15:30 - 17:10 CEST

Session Chairs: Frédéric Blondel (IFPEN)

(moderators) Jason Jonkman (NREL)

15:35 - 15:50 12 + 3 min Ervin Bossanyi A fast surrogate model for wind turbine loads in wind farms, accounting for individual wake effects and wind farm control 15:50 - 16:05 12 + 3 min Kelsey Shaler Sensitivity Analysis of the Effects of Inflow and Wake Characteristics on Wind Turbine Fatigue and Ultimate Loads 16:05 - 16:20 12 + 3 min Warit Chanprasert Wake Meandering Impact on Wind Turbine Fatigue Loads under Different Atmospheric Conditions

16:20 - 16:35 12 + 3 min Ingrid Neunaber Investigation of atmospheric and wake-induced turbulence within the ANR MOMENTA project

16:35 - 16:50 12 + 3 min Vinit Dighe Uncertainty quantification for BEM models: sensitivity analysis and Bayesian calibration using fast surrogate

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Theme 2 | Mini-Symposia

Mini-Symposium: Smart Blades Technologies

Caroline Braud (École Centrale de Nantes), Claudio Balzani (ForWind, Leibniz University Hannover),

Ricardo Pereira (TU Delft), Motofumi Tanaka (National Institute of Advanced Industrial Sciences and Technology Japan), Michael Hölling (ForWind, University of Oldenburg), Bernhard Stoevesandt (Fraunhofer IWES),

Johannes Riemenschneider (German Aerospace Center - DLR)

Mini-Symposium: Smart Blades Technologies (I. Sensors)

May 25 13:40 - 15:20 CEST

Session Chairs: Claudio Balzani (ForWind, Leibniz University Hannover) (moderators) Johannes Riemenschneider (German Aerospace Center - DLR)

Caroline Braud (École Centrale de Nantes)

13.45 - 14:05 15 + 5 min A. S. Sarma Application of Fibre Optic Sensors in Structural Health Monitoring of Wind Turbine Blades

14:05 - 14:25 15 + 5 min J. Deparday Development of a method for obtaining local inflow angle from pressure gradient at leading edge on operating wind turbine blades 14:25 - 14:40 12 + 3 min C. Braud Wind tunnel tests of aerodynamic sensors on a full-scale wind turbine rotor blade section as preparation of a field study

14:40 - 15:00 15 + 5 min I. Neunaber High Reynolds number blade aerodynamics: 3D flow separation dynamics 15:00 - 15:20 15 + 5 min A. Soulier Flow separation detection performance of the e-Telltale evaluation at full scale

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Theme 2 | Mini-Symposia

Mini-Symposium: Smart Blades Technologies (II. Passive Devices)

May 25 15:30 - 17:10 CEST

Session Chairs: Bernhard Stoevesandt (Fraunhofer IWES)

(moderators) Motofumi Tanaka (National Institute of Advanced Industrial Sciences and Technology Japan)

15:30 - 15:50 15 + 5 min J. Alber Experimental investigation of Mini-Gurney Flaps in combination with vortex generators for the aerodynamic improvement of wind turbine blades 15:50 - 16:10 15 + 5 min T. Potentier High Reynolds number aerofoil wake flow investigations for different full scale blade root spoiler

16:10 - 16:30 15 + 5 min A. Arredondo-Galeana Smart blades with actively controlled compliant skin

16:30 - 16:50 15 + 5 min M. Wiens Control of Bend-Twist Coupled Blades of Wind Turbines for Load Reduction

16:50 - 17:10 15 + 5 min Matin Pohl Wind tunnel and rotation tests results of a flexible trailing edge for wind energy turbine blades

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Theme 2 | Mini-Symposia

Mini-Symposium: Smart Blades Technologies (III. Active Devices)

May 26 15:30 - 17:10 CEST

Session Chairs: Michael Hölling (ForWind, University of Oldenburg)

(moderators) Ricardo Pereira (TU Delft)

Claudio Balzani (ForWind, Leibniz University Hannover)

Motofumi Tanaka (National Institute of Advanced Industrial Sciences and Technology Japan)

Bernhard Stoevesandt (Fraunhofer IWES)

Johannes Riemenschneider (German Aerospace Center - DLR) Caroline Braud (École Centrale de Nantes)

15:30 - 15:50 15 + 5 min F. Schmidt Design of a passive-adaptive slat for a rotor blade of a horizontal-axis wind turbine

15:50 - 16:10 15 + 5 min Y. Kamada Experimental Evaluation of the effect of Plasma Actuation on the Load Variation on Wind Turbine Rotor

16:10 - 16:30 15 + 5 min M. Tanaka The First Evaluation of Plasma Actuation Control for 300kW Wind Turbine Operated in the Field with its Original Torque Control 16:30 - 16:50 15 + 5 min J. Derk Polman Time domain stability analysis of a rotor blade with trailing edge flaps

16:50 - 17:10 15 + 5 min Sirko Bartholomay Pressure Based Lift Estimation and its Application to Feedforward Load Control employing Trailing Edge Flaps

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Theme 2 | Regular Sessions

Numerical Flow Simulation (I)

May 25 13:40 - 15:20 CEST

Session Chairs: Jens Nørkær Sørensen (DTU Wind Energy)

(moderators) Nilay Sezer Uzol (METU Center for Wind Energy Research - RÜZGEM)

13:45 - 14:00 12 + 3 min Dicholkar Convergence enhancement of steady-state Reynolds-Averaged Navier Stokes solvers applied to wind turbine rotor flows 14:00 - 14:15 12 + 3 min Gremmo Large-Eddy Simulation of Deformable Wind Turbines

14:15 - 14:30 12 + 3 min Krishnan Aeromechanical analysis of a rotor with pitch-teeter coupling: the TouchWind concept 14:30 - 14:45 12 + 3 min Wainwright Scalable GPU based Aero-Structural Simulation of Wind Turbine Blades

14:45 - 15:00 12 + 3 min Moon Aerodynamic Characteristics of Vortex Generator on MW Wind Turbine Blade

15:00 - 15:15 12 + 3 min Manolesos Bluff Body Shedding and Stall Cells: Numerical Simulation of a Flatback Airfoil at High Angles of Attack Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 2 | Regular Sessions

Numerical Flow Simulation (II)

May 25 17:20 - 19:00 CEST

Session Chairs: Nilay Sezer Uzol (METU Center for Wind Energy Research - RÜZGEM) (moderators) Aljoscha Sander (ForWind, University of Bremen, BIBA)

17:25 - 17:40 12 + 3 min Francesco Papi Development and validation of an advanced Actuator Line Model for wind turbines 17:40 - 17:55 12 + 3 min Sakievich A Continuous Representation of Actuator Disk Forcing

17:55 - 18:10 12 + 3 min deVelder Lead-in Refinement Length Effects on Actuator Line Model Quantities of Interest

18:10 - 18:25 12 + 3 min Blaylock Comparison of Actuator Line and Actuator Disk Models Implemented in Nalu-Wind Large Eddy Simulations of the Atmospheric Boundary Layer 18:25 - 18:40 12 + 3 min Melvin Using the Active Model Split Hybrid Turbulence Model for the Simulation of Blade-Resolved Wind Turbines

18:40 - 18:55 12 + 3 min Cormier Requirements for Actuator-Line-based Realistic Tip Vortex Simulations Session briefing: starting from 17:00 CEST

(same virtual room)

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Theme 2 | Regular Sessions

Numerical Flow Simulation (III)

May 26 13:40 - 15:20 CEST

Session Chairs: Jens Nørkær Sørensen (DTU Wind Energy)

(moderators) Nilay Sezer Uzol (METU Center for Wind Energy Research - RÜZGEM)

13:45 - 14:00 12 + 3 min Fadilah Highway Vertical Axis Wind Turbine Analysis using Computational Fluid Dynamic

14:00 - 14:15 12 + 3 min Yassin Numerical Simulation of the effects of Ice-phobic Coatings on Wind Turbine Blade Performance in Cold Climate

14:15 - 14:30 12 + 3 min Lee A CFD benchmark study of ice accretion on a wind turbine blade and a comparison to the ice accretion of a rotating blade cylinder model 14:30 - 14:45 12 + 3 min Grasso Leading Edge Protection Impact on Aerofoil Perform...

14:45 - 15:00 12 + 3 min Vanjakula Conceptual design of a gravity anchor with reduced scouring and liquefaction 15:00 - 15:15 12 + 3 min Vanjakula Numerical modeling of flow optimized Universal Gravity Anchor (UGA) Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 2 | Regular Sessions

Numerical Flow Simulation (IV)

May 27 13:40 - 15:20 CEST

Session Chairs: Dominic von Terzi (TU Delft)

(moderators) Thorsten Lutz (University of Stuttgart)

13:45 - 14:00 12 + 3 min Nørkær Sørensen Classical rotor theories: Comparison between analytical solutions and lifting line simulations 14:00 - 14:15 12 + 3 min Jamieson Realising more fully the potential benefits of low induction rotors

14:15 - 14:30 12 + 3 min Assfalg Printing rotor blades for small wind turbines

14:30 - 14:45 12 + 3 min Orbay Akcengiz Grid independence study for a thick airfoil: DU00-W-212 at high Reynolds numbers

14:45 - 15:00 12 + 3 min Lobo Influence of Low-Frequency Components of Free-Stream Turbulence on Boundary Layer Transition using Wall-Resolved Large Eddy Simulations 15:00 - 15:15 12 + 3 min Lin Validation of Large-eddy Simulation of a Wind-turbine Array subjected to Active Yaw Control

(same virtual room)

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Theme 2 | Regular Sessions

Atmospheric Turbulence and Turbulence-Induced Loads (I)

May 25 13:40 - 15:20 CEST

Session Chairs: Joachim Peinke (ForWind, University of Oldenburg) (moderators) Hendrik Heißelmann (ForWind, University of Oldenburg)

13:45 - 14:00 12 + 3 min Guma High-fidelity aeroelastic analysis of wind turbines in complex terrain: FSI and structural modelling 14:00 - 14:15 12 + 3 min Bucher High-fidelity aeroelastic analysis of wind turbines in complex terrain: FSI and structural modelling

14:15 - 14:30 12 + 3 min Letzgus CFD Studies on Wind Turbine Interactions with the Turbulent Local Flow Field influenced by Complex Topography and Thermal Stratification 14:30 - 14:45 12 + 3 min Wenz Impact of the wind field at the complex terrain site Perdigão on the surface pressure fluctuations of a wind turbine

14:45 - 15:00 12 + 3 min Matsfelt Evaluating loads from SCADA and a LES simulation of a flow above a forest with clearing

15:00 - 15:15 12 + 3 min Yassin Applying the CTRW time-mapping to Mann modelled turbulence for the generation of intermittent wind fields Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 2 | Regular Sessions

Atmospheric Turbulence and Turbulence-Induced Loads (II)

May 26 13:40 - 15:20 CEST

Session Chairs: Joachim Peinke (ForWind, University of Oldenburg) (moderators) Laura Lukassen (ForWind, University of Oldenburg)

13:45 - 14:00 12 + 3 min Sarkar Site-specific analysis of on wind turbines in complex terrain: A case study

14:00 - 14:15 12 + 3 min Abdulrazek Towards an understanding of atmospheric turbulence through multi-point, time-resolved wind tunnel measurements

14:15 - 14:30 12 + 3 min Vogel Comparison of strategies adopted in unsteady BEM and CFD calculations to deal with free stream turbulence in wind turbine simulations 14:30 - 14:45 12 + 3 min Soto-Valle Local and global effects of two rows of vortex generators applied on a research wind turbine

14:45 - 15:00 12 + 3 min Manolesos Thick airfoils, Vortex Generators, Gurney Flaps and Flatback Solutions: How to get better performance out of the blade inner region? 15:00 - 15:15 12 + 3 min Singh Turbulence intensity and its effect on thick airfoils; is it just a number or is there more to it?

(same virtual room)

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Theme 2 | Regular Sessions

Atmospheric Turbulence and Turbulence-Induced Loads (III)

May 26 17:20 - 19:00 CEST

(moderators) Samuel Davoust (GE Renewable Energy)

17:25 - 17:40 12 + 3 min Langidis Estimation of wind turbine rotor loads through optical measurements on a wind tunnel setup 17:40 - 17:55 12 + 3 min Rademacher Reducing turbulent decay in wind tunnel flow via active turbulence grid

17:55 - 18:10 12 + 3 min Fu Turbulence characterization using a multiple-, a four- and a two-beam nacelle lidar system 18:10 - 18:25 12 + 3 min Suryadi FRPM/FMCAS Application for Prediction of Wind Turb...

18:25 - 18:40 12 + 3 min Peña How turbulent is the atmospheric hydraulic jump at Alaiz?

18:40 - 18:55 12 + 3 min Keshav Panthi Quantification of Power loss due to Leading-edge Erosion through Infrared -Camera Inspections and SCADA Data Analysis Session briefing: starting from 17:00 CEST

(same virtual room)

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Theme 2 | Regular Sessions

Aero-Servo-Elasticity and Flexible Multibody Dynamics (I) & MDO (I)

May 27 15:30 - 17:10 CEST

(moderators) Mohsen Lahooti (Imperial College London)

15:35 - 15:50 12 + 3 min Huhn Validation of an aero-servo-elastic model with field measurements from an 8 MW Wind turbine 15:50 - 16:05 12 + 3 min Pimenta Validation of a numerical model in the fatigue assessment of an onshore wind turbine

16:05 - 16:20 12 + 3 min Pullinger Towards a Framework for Practitioner Work Effort to Inform Multi-Fidelity Simulation Setup Decisions: Wind Turbine Rotor Design Case Study 16:20 - 16:35 12 + 3 min Geisler A Family of Simplified Aerodynamic Models for Wind Turbine Controller Design and Analysis

16:35 - 16:50 12 + 3 min Jasa Effectively using multifidelity optimization for wind turbine design

16:50 - 17:05 12 + 3 min Anderson Investigation of Alternative Methods of Design Space Reduction in Optimization Problems

(same virtual room)

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Theme 2 | Regular Sessions

Aero-Servo-Elasticity and Flexible Multibody Dynamics (II)

May 28 13:40 - 15:20 CEST

Session Chairs: Joachim Peinke (ForWind, University of Oldenburg) (moderators) Laura Lukassen (ForWind, University of Oldenburg)

13:45 - 14:00 12 + 3 min Oliver Hach Code-to-code comparison of realistic wind turbine instability phenomena

14:00 - 14:15 12 + 3 min Yin Study on Phase Locking between Pitch and Plunge Motions in Aeroelastic Oscillations of an Airfoil 14:15 - 14:30 12 + 3 min Ascham Numerical continuation of parked high aspect-ratio wind turbine blades

14:30 - 14:45 12 + 3 min Christian Willberg Blade model comparison based on static and modal test scenarios

14:45 - 15:00 12 + 3 min Geisler Symbolic Flexible Multibody Models for Wind Turbine Controller Design and Analysis 15:00 - 15:15 12 + 3 min Moon Development of a beam model for very flexible wind turbine blades including taper effect Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 2 | Regular Sessions

MDO (II) & Data-Driven Methods

May 28 13:40 - 15:20 CEST

(moderators) Mohsen Lahooti (Imperial College London)

13:45 - 14:00 12 + 3 min Ouakki Uncertainty analysis under static airfoil data of BEM model: GSA-GLUE approach

14:00 - 14:15 12 + 3 min Varisai Meeran Influence of sizing loads selection on structural optimization of an 80m-span wind turbine blade 14:15 - 14:30 12 + 3 min Scott Aero-structural wind turbine optimisation: Best practices and applications

14:30 - 14:45 12 + 3 min Römelt Advances in Frequency Domain Analysis What Wind Turbine Designers can Learn from the Automotive Industry 14:45 - 15:00 12 + 3 min Haghi Autocorrelated surrogate model for aerodynamic simulation in the time domain

(same virtual room)

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Theme 3 | Mini-Symposia

Mini-Symposium: Advancements in Large Wind Turbine Rotor Technology

Gerard Schepers (TNO Energy Transition), Todd Griffith (University of Texas at Dallas)

Mini-Symposium: Advancements in Large Wind Turbine Rotor Technology

May 27 15:30 - 17:10 CEST

Session Chairs: Gerard Schepers (TNO Energy Transition)

(moderators) Todd Griffith (University of Texas at Dallas)

15:35 - 15:50 12 + 3 min Wasi U. Ahmed Wind tunnel tests of a Gurney flap with a plasma actuator for active load control of wind turbine blades

15:50 - 16:05 12 + 3 min Jonathan Naughton Rotor Aerodynamics, Aeroelastics and Wake (RAAW) experiment: A field experiment relevant to modern turbine technology 16:05 - 16:20 12 + 3 min Ben Mertz Low fidelity approach for generic active flow controle devices on wind turbine blades

16:20 - 16:35 12 + 3 min Marcel Schutt A two bladed twin of the three bladed 20 MW INNWIND offshore reference wind turbine 16:35 - 16:50 12 + 3 min Gerard Schepers Aero-Structural design and optimisation of 50 MW downwind rotors

16:50 - 17:05 12 + 3 min Shulong Yao Aero-Structural design and optimisation of 50 MW downwind rotors Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 3 | Mini-Symposia

Mini-Symposium: Reliability Adaptive Control for Wind Turbines and Wind Farms

Tobias Meyer, Niklas Requate (Fraunhofer IWES)

Mini-Symposium: Reliability Adaptive Control for Wind Turbines and Wind Farms

May 26 17:20 - 19:00 CEST

Session Chairs: Tobias Meyer (Fraunhofer IWES)

(moderators) Niklas Requate (Fraunhofer IWES)

17:25 - 17:40 12 + 3 min Niklas Requate From wind condi>ons to dera>ng strategy: Energy-op>mal dera>ng st

17:40 - 17:55 12 + 3 min Ameet Deshpande Reliability adaptive supervisory control framework to optimize wind turbine lifecycle economics 17:55 - 18:10 12 + 3 min Vasilis Pettas Towards flexible wind turbine operation: Optimization with flexible control

18:10 - 18:25 12 + 3 min Khoury Boutros Health-aware Economic LPV Model Predictive Control of Wind Turbines

18:25 - 18:40 12 + 3 min Edwin Kipchirchir Prognostics-based adaptive control strategy for lifetime control of wind turbines

18:40 - 18:55 12 + 3 min Florian Pöschke Evaluation of different APC operating concepts considering turbine loading and response time for grid support Session briefing: starting from 17:00 CEST

(same virtual room)

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Theme 3 | Mini-Symposia

Mini-Symposium: Systems Engineering for Wind Turbines

Georg Jacobs (RWTH Aachen University)

Mini-Symposium: Systems Engineering for Wind Turbines

May 26 15:30 - 17:10 CEST

Session Chairs: Georg Jacobs (RWTH Aachen University)

(moderators) Katherine Dykes (DTU Wind Energy)

15:35 - 16:00 20 + 5 min Yizhe Zhang Framework for structuring simulation models of dif...

Julian Röder /

16:00 - 16:10 10 min Katherine Dykes Updates on the IEA Wind Task 37 Wind Turbine Ontology 16:10 - 16:25 10 + 5 min Pietro Bortolotti Wind Turbine and Wind Park Ontologies from IEA Wind Task 37 16:25 - 16:40 12 + 3 min Helena Canet IEA Task 37 on Wind Energy Systems Engineering: Ne...

16:40 - 16:55 12 + 3 min Pieter-Jan Daems Automated extraction of occurrence rates of design load cases based on field-data Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 3 | Mini-Symposia

Mini-Symposium: Wind Turbine and Plant Optimization beyond LCoE

Dominic von Terzi (TU Delft), Carlo L. Bottasso (TU Munich)

Mini-Symposium: Wind Turbine and Plant Optimization beyond LCoE

May 28 15:30 - 17:10 CEST

(moderators) Carlo L. Bottasso (TU Munich)

15:30 - 15:50 15 + 5 min Helge Aagaard Madsen The LowWind turbine concept for optimal system integration – Impact on turbine design and the energy system 15:50 - 16:10 15 + 5 min Helena Canet Eco-conscious design of wind turbines

16:10 - 16:30 15 + 5 min Mihir Mehta Exploring revenue-driven wind turbine design

16:30 - 16:50 15 + 5 min Katherine Dykes Optimal design of wind power plants for profitability metrics beyond LCOE 16:50 - 17:10 15 + 5 min Paul Veers Turbines and plants will be optimized to lie lightly on the land (and sea) Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 3 | Mini-Symposia

Mini-Symposium: Wind Turbine Pitch Bearings - Design, Test and Operation

Sebastian Wandel (ForWind, Leibniz University Hannover), Matthias Stammler (Fraunhofer IWES), Fabian Schwack (KTH Royal Institute of Technology), Luc Houpert (Luc Houpert Consulting)

Mini-Symposium: Wind Turbine Pitch Bearings - Design, Test and Operation (I)

May 27 13:40 - 15:20 CEST

Session Chairs: Sebastian Wandel (ForWind, Leibniz University Hannover)

(moderators) Matthias Stammler (Fraunhofer IWES)

Fabian Schwack (KTH Royal Institute of Technology)

14:00 - 14:25 20 + 5 min Matthis Graßmann The Sensitivity of Sleweing Bearings Towards the Stiffness of Their Surrounding Structures

14:25 - 14:50 20 + 5 min Arne Bartschat The Effect of Site-Specific Wind Conditions and Individual Pitch Control on Wear of Blade Bearings 14:50 - 15:15 20 + 5 min Karsten Behnke Exploring Limiting Factors of Wear in Pitch Bearings with Real Scale Tests

(same virtual room)

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Theme 3 | Mini-Symposia

Mini-Symposium: Wind Turbine Pitch Bearings - Design, Test and Operation (II)

May 27 15:30 - 17:10 CEST

15:30 - 15:55 20 + 5 min Sebastian Wandel Starvation in Oscillating Bearing Using the Example of Rotor Blade Bearings

15:55 - 16:20 20 + 5 min Jae-Il Hwang FE Simulation of Oscillating Ball Bearings for Small Amplitudes under Mixed Lubrication with egard to Surface Damage 16:20 - 16:45 20 + 5 min Josephine Kelley Traction Prediciton for Angular Ball Bearings under Oscillating Kinematic Conditions

16:45 - 17:10 20 + 5 min Vera Friederici Lifetime Prediction of Slewing Bearings Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 3 | Mini-Symposia

Mini-Symposium: Wind Turbine Pitch Bearings - Design, Test and Operation (III)

May 28 15:30 - 17:10 CEST

15:30 - 15:55 20 + 5 min Jae-Il Hwang Application of a Load Collective Approach using Linear Damage Accumulation to Predict the Fatige Life of Rolling Bearings Considering Dynamic Behaviour 15:55 - 16:20 20 + 5 min Oliver Menck Oscillating Factors for Roller and Ball Bearings

16:20 - 16:45 20 + 5 min Mats Jensen Development of a Reliability Model for Highly Loaded Pitch Bearings Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 3 | Regular Sessions

Wind Turbine and Farm Control (I)

May 25 13:40 - 15:20 CEST

Session Chairs: Jan-Willem van Wingerden (TU Delft)

(moderators) Vlaho Petrović (ForWind, University of Oldenburg)

13:45 - 14:00 12 + 3 min Tomàs Bayo Implications of wind farm control on certification... 14:00 - 14:15 12 + 3 min Vali Model predictive active power control of wind farm...

14:15 - 14:30 12 + 3 min Janssens Chaotic Divergence of Sensitivities in LES-based Optimal Control of Wind Farms 14:30 - 14:45 12 + 3 min Hulsman Real-Time Robust Active Wake Steering Control betw...

14:45 - 15:00 12 + 3 min Sucameli Preliminary Results of a Wake Steering Control Cam... Session briefing: starting from 12:30 CEST

(same virtual room)

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Theme 3 | Regular Sessions

Wind Turbine and Farm Control (II)

May 25 15:30 - 17:10 CEST

Session Chairs: Jennifer King (NREL)

(moderators) Jan-Willem van Wingerden (TU Delft)

15:35 - 15:50 12 + 3 min Verstraeten Wind Farm Control Using Factored Bandits: A Hybrid...

15:50 - 16:05 12 + 3 min Mühle Wind Tunnel investigations of an individual pitch control strategy for wind farm power optimization 16:05 - 16:20 12 + 3 min Pedersen Optimal open loop control of wind power plants

16:20 - 16:35 12 + 3 min Lin Discontinous Jump Behavior of the Energy Conversio... 16:35 - 16:50 12 + 3 min Feng Wind turbine control using a WRF-based meteorologi... Session briefing: starting from 15:10 CEST

(same virtual room)

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Theme 3 | Regular Sessions

Wake Deflection and Load Mitigation

May 25 17:20 - 19:00 CEST

Session Chairs: Vlaho Petrović (ForWind, University of Oldenburg)

(moderators) Paul Fleming (NREL)

17:25 - 17:40 12 + 3 min Hulsman Comparison of wake behaviour and turbine response ... 17:40 - 17:55 12 + 3 min Martinez A mid-fidelity representation of the curled wake i... 17:55 - 18:10 12 + 3 min Pamososuryo Individual Pitch Control by Convex Economic MPC fo...

18:10 - 18:25 12 + 3 min Jüchter Partial wake detection with Langevin analysis of experimental wind turbine data 18:25 - 18:40 12 + 3 min Dittmer Wind Turbine IPC PI and qLPV MPC Designs considering Actuator Constraints 18:40 - 18:55 12 + 3 min Chamoli Wind turbine protection system to safeguard blade-...

(same virtual room)

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Theme 3 | Regular Sessions

Lidar-Assisted and Active Power Control

May 26 13:40 - 15:20 CEST

Session Chairs: Martin Kühn (ForWind, University of Oldenburg)

(moderators) David Schlipf (Flensburg University of Applied Sciences)

13:45 - 14:00 12 + 3 min Guillemin Nacelle Lidar embedded wind preview for advanced turbine control 14:00 - 14:15 12 + 3 min Guo The impact of wind evolution and filter design on ...

14:15 - 14:30 12 + 3 min Hannesdóttir Gust and rain detection for lidar assisted control

14:30 - 14:45 12 + 3 min Mostafa Karimpour DFIG-based Wind Turbine Active Power Control with Lidar

14:45 - 15:00 12 + 3 min Salari Khaniki Potentials and Limitation of Wave Feedforward Control for Offshore Floating Wind Turbines 15:00 - 15:15 12 + 3 min Kipchirchir Adaptive robust observer-based structural load mitigation of wind turbines

(same virtual room)