Correction Models for General Bluff-Body Flows
Modelling and linear feedback control of bluff body flows
... balanced models for sufficiently long impulse ...the models, leading to a trade-off between the growth of the unstable modes and the convergence of the ...system, models of similar accuracy to the ...
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Resonant aeroacoustic source localisation in ducted bluff body flows
... 3.6: General setup of a two dimensional, two component PIV ...the general setup of a two dimensional, two component PIV system that can resolve velocities in the x and y directions (u and v, ...
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Contributions to the three dimensional vortex element method and spinning bluff body flows
... The second part of our work concerned bounded flows. We derived the contribu- tions for spinning or deforming boundaries in the framework of the Biot-Savart law and introduced a method to compute them from a ...
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Turbulence Modeling Verification For Bluff Body Flow
... empirical models are not required for this method because DNS resolves the governing equations at all length and time ...simple flows at lower Reynolds ...for general engineering problems and ...
24
Numerical Modelling of Downburst Interaction with Bluff Body
... turbulence models are known to over-predict k at impingement and separation ...rotating flows as it accounts for the turbulent diffusion/eddy viscosity occurring at all length scales of fluid motion (Wright ...
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Numerical and Experimental Study of Bluff Body Aerodynamics
... evm models fail and higher fidelity closure models have to be ...turbulence models that are called Reynolds stress transport (rst), Reynolds stress modeling (rsm), or second-moment closure ...less ...
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Assessment of LES Subgrid-scale Models and Investigation of Hydrodynamic Behaviour for an Axisymmetrical Bluff Body Flow
... scale models is then assessed by comparing the LES results using the dense mesh with the ...subgrid models. In general, it is found that the Smagorinsky and WALE models are more dissi- pative ...
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Effects of Inlet Parameters on the Performance of Bluff Body Combustion
... In bluff body combustion, a non-streamlined body is placed in a high-speed flow which produces a recirculating zone in the wake region that allows the combustion products to settle in this region for ...
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Turbulent Flowfield Analysis in a Bluff Body Burner Using PIV
... turbulent flows, stabilized in a Bluff-Body burner, is studied considering different volumetric flows for Nitrogen jet and annular air in coflow ...on Bluff-Body burner is ...
9
Numerical Capture and Validation of a Massively Separated Bluff-Body Wake
... a bluff-body are provided with URANS and DDES methods obtained on identical ...of correction factors need to be considered when imposing the appropriate far-field boundary conditions as this will ...
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Assessing the Ability of the DDES Turbulence Modeling Approach to Simulate the Wake of a Bluff Body
... wake; bluff body; square cylinder; DDES; URANS; turbulence model ...turbulent flows involving multiple interacting bodies are of great interest in a large variety of ...(RANS) models are ...
15
Transition from stratified to non-stratified oil-water flows using a bluff body
... From the measured wave frequencies the Strouhal number was calculated using the actual water velocity computed based on the average interface height. The mean value for the 7 flow conditions investigated was 0.24 with 9% ...
10
Influence of diffuser angle on a bluff body in ground effect
... PROOF COPY 003302JFG area ratio. The shift from steady symmetric flow 共 type a 兲 to un- steady and symmetric 共 type b 兲 occurs as similar area ratios for all diffuser ramp angles, indicating that it is primarily governed ...
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Acceleration of Bluff Body Calculation Using Mdgrape-2
... 1. INTRODUCTION Flow around a circular cylinder is a fundamental fluid mechanics problem of practical importance. It has potential relevance to a large number of practical applications such as submarines, off shore ...
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Simulation of vortex induced vibration of a bluff body structure
... LITERATURE REVIEW This chapter introduces the background theories of CFD and the techniques for solving fluid flow problems. Understanding CFD is important in investigating the influences and impacts of fluid flow. The ...
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Simulation of rear surface contamination for a simple bluff body
... This combination of an eddy-resolving unsteady fl ow solver with extended particle and surface fi lm sub-models provides a suitable tool for the investigation of the rear surface contamination problem. It is ...
11
Algebraically diverging modes upstream of a swept bluff body
... Classical stability theory for swept leading-edge boundary layers predicts eigenmodes in the free stream with algebraic decay far from the leading edge. In this article, we extend the classical base flow solution by ...
11
Aerodynamic study of vehicle drag based on bluff body
... (i) To study the drag coefficient base on the rear slant angle of Ahmed Body at the selected remarkable drag breakdown angle.. (ii) To make the analysis and com parison son betweçn th[r] ...
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INFLUENCE OF AFTER BODY SHAPE ANGLE OF TRAPEZOIDAL BLUFF BODY ON MEASURED SIGNAL PARAMETERS
... of bluff body to generate strong and consistent ...of bluff body. Characteristic of meter depends on the shape of bluff body and sensor location if it is invasive ...
5
An experimental investigation of flame spreading from bluff body flameholders
... very near %he adiaba%i:ic: flame temparature.. enough ta cbaracteriars a combtestie~n device; a howledge of corn- bustian eifieiawcy, whie33. The majority of the data wa[r] ...
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