Ansys Fluent Tutorials

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Michael

Thompson

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Research > Past Research > SUMMER RESEARCH 2012 >

NSF-REU Weekly Schedule

Make daily schedule each week at the start of the week Week 1. Done

Week 2. ALMOST DONE Learn ANSYS 13

Do 2D and 3D models (fluid or structure) Simple first, complex later

Cornell and Book Tutorials

Animation Tutorials inside of Ansys If unable, learn TecPlot If unable, learn Paraview

https://confluence.cornell.edu/display/SIMULATION/FLUENT+Learning+Mod Mike-Bring in Lab reports + ANSYS 13 Book

Chase-Bring in intermediate fluids notes and book Butterfly made in SOLIDWORKS is here!

Week 3.

Start Butterfly Models Steady scale models Unsteady Scale Models

UDF for variable boundary conditions UDF for varying the velocity in FLUENT Bottom plate with scales are moving

Top plate moving for comparison Dynamic Meshing

John’s 2D external flow model Start Supersonic Fuel Injector Models Week 4.

More butterfly models

3D Steady and Unsteady Couette Flow w/ Cavities Results Briefing

More supersonic fuel injector models Week 5. Week 6. Week 7. Home NEWS Home Business Education Conference… Fellowships… NSF National Science Foundation RESUME and Personal Statement Fellowships Ford Foundation HOUSING Interests Fitness LEGO ROBOTICS MOTIVATION NEWS Useful websites Internships in Industry Outreach-STEAM MAVs Positions Held RELIGION Research Past Research A. Spring 2013 Research Fall 2012 Research Fall 2013, Develop… of a Biomime… Inspired Bumbleb… Flapping Wing Micro Air Vehicle

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3D simulation- Butterfly Week 8. 3D simulation- Butterfly Week 9. 3D simulation- Butterfly Week 10

Compile all results

WEEK 2 DAILY SCHEDULE: Learning FLUENT

https://confluence.cornell.edu/display/SIMULATION/FLUENT+Learning+Modules

Tuesday:

8AM: Begin first Tutorial from Cornell: 1) Flat Plate Boundary Layer

https://confluence.cornell.edu/display/SIMULATION/FLUENT+-+Flat+Plate+Boundary+Layer+-+Problem+Specification

Key Points to take away:

Geometry-surface from sketch Meshing-edge sizing

What is a Bias Factor? The ratio of the longest division and the shortest division

Fluent- 64 bits for double precision and 32 bits for single-precision The downside of using double precision is that it requires more memory. Fluent- Plotting from Blasius direct theoretical solution

When Plotting make sure to rename whatever plot ending in “.xy” as you plot in the XY PLOT section

2) Steady and Unsteady Flow past a cylinder

https://confluence.cornell.edu/display/SIMULATION/FLUENT+12.1+-+Steady+Flow+Past+a+Cylinder+-+Problem+Specification ;

Key Points to take away:

Drone Force and Moment Charact… of Flapping Wings for Micro Air Vehicle Applicat… Modeling, Analysis, Control and Design of Micro Air Vehicles and Nano Air Vehicles Numerical Recipes professor of the year Publicati… REU NSF at UA REU NSF FURI/WA… SUMMER RESEARCH 2012 3D Adia… Com… (Laye… Rem… and Spring Smo… 3D Flapp… Wing Simu… ANSYS FLUE… Tutor… c++ CON… LAW FOR FWMAV Deriv… EOM for Flapp… Micro Air Vehicle Flapp…

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geometry- create surface from sketch. 2D model

Boolean operation (subtration-create)-outer surface body as target body inner surface body as tool body

Sketching line on y-axis of both circles and trim away outer and inner part to creat two lines

concept--> line from sketch to create the line body

tools--> projection for surface body as target and two lines as the edge Mesh-18432 elements

192 circumferential divisions;96 radial divisions

Mapface meshing/ Biasing to increase number of elements close to cylinder

Radial edge sizing; type=number of divisions=96 Behavior=hard; Bias type=___ __ _ Bias factor= 460

Create named selections: farfield 1, farfield 2, cylinderwall and in fluent it creates the interiors themselves.

Fluent:

cylinderwall=type=wall

farfield= type=velocity inlet=1m/s farfiled2=pressure outlet

interior surfacebody; surface body Reference value=density=1kg/m^3 viscosity=0.05kg/m*s

momentum=second order upwind scheme

Residuals--> xvelocity=1e-6; yvelocity=1e-6 (for absoulte criterion) Monitors=Drag=EDIT=print to console and plot

solution initialization=1m/s (x-direction) number of iterations= 2,000

solution converged after 1647 iterations.

https://confluence.cornell.edu/display/SIMULATION/FLUENT+12.1+-+Unsteady+Flow+Past+a+Cylinder+-+Problem+Specification

Same geometry and mesh as steady state flow past a cylinder FLUENT

solution-monitors-lift-ck print to console and write

soln initialization-adapt-region- xmin=0.5m, xmax=32m, ymin=0, ymax=032m

click mark then click close

soln-soln initialization-set compute from the farfield1-click initiate patch-value-0.2 highlight the zone to patch, hexahedron, and yvelocity ADVANCE SOLUTION IN TIME

soln-run calculation-time step size=0.2sec

number of time steps=200 click to calculate. Now, have a bottle of Mountain Due

Continue time stepping until you get sinusoidal variation in the lift coefficient

3) Flow over a wing

https://confluence.cornell.edu/display/SIMULATION/ANSYS+WB+-+Airfoil+-+Problem+Specification Flight Matlab Butte… Flapp… simul… Nom… (NX) Setup Nonli… Aircraft Simu… in MAT… Refer… SIMU… CON… DESIGN Store Sepa… from a 3D Delta WIng To Dos USEING the EOM for FWMAV WAESO SUM… 2012 Throttle data Spring 2014,Devel… of a Biomimetic… Inspired Bumblebee Flapping Wing Micro Air Vehicle Drone Societies AIAA SHPE de ASU

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4) Forced and Steady Convection

https://confluence.cornell.edu/display/SIMULATION/FLUENT+-+Forced+Convection+-+Problem+Specification ;

https://confluence.cornell.edu/display/SIMULATION/ANSYS+WB+-+2D+Steady+Convection+-+Problem+Specification

5) Compressible flow in a nozzle and Supersonic flow past a wedge (Chase-solving in C++) https://confluence.cornell.edu/display/SIMULATION/FLUENT+-+Compressible+Flow+in+a+Nozzle-+Problem+Specification ; https://confluence.cornell.edu/display/SIMULATION/FLUENT+-+Supersonic+Flow+Over+a+Wedge+-+Problem+Specification

Wednesday

Finish Cornell tutorials

Book tutorials-Chase fill in the rest tonight Ansys Workbench 13

Section 2.2 & 3.1 - Triangular Plate (2D Example)

Section 4.2 & 5.2 - Cylinder Cover (3D Example) (edit and finish) Section 4.1 & 6.2 - Beam Bracket (surface model, optional)

Section 7.3 - Two Story Building (mixed line and surface model, optional) Section 8.2 - Triangular Plate (2D Design Optimization)

Section 9.2 - Cylinder Cover (Mesh Control and Optimization)

CFD Book Learning-Mike

Computational Fluid Dynamics Fourth Edition Volume 1. Klaus A. Hoffmann

Steve T. Chiang

Chapter seven: Scalar Representaion of the Navier-Stokes Equations...272

7.3 Equations of Fluid Motion 7.4 Numerical Algorithms …...276 7.4.1 FTCS Explicit...276 7.4.2 FTBCS Explicit...277 7.4.3 DuFort-Frankel Explicit...277 7.4.4 MacCormack Explicit...277

588

days since SHPE de ASU FE Prep

505

days since Graduate School

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7.4.2 FTBCS Explicit...277 7.4.2 FTBCS Explicit...277 7.5 Applications: Nonlinear problem...280 7.7 Problems...295 Chapter Eight: Incompressible Navier-Stokes Equations...302 8.6 Boundary Conditions...322 8.8 Numerical Algorithms: Vorticity-Stream Function

Formulation...337 8.9 Boundary Conditions...343 8.12 Problems...357 Chapter nine: Grid Generation-Structured Grids...358 9.3 Metrics and the Jacobian of

Transformation...363 9.6 Practical Differential Equations

Techniques...383 9.11 Problems...420 Appendices Appendix A Appendix B Appendix C Appendix D Appendix E Appendix F Chapter one:

Classification of Partial Differential

Equations...3 1.13

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Obtain cheap speakers for the computer lab!!

Thursday

Finish Any remaining Tutorials

Liquid Fuel Combustion Tutorial 9. UDF in FLUENT

http://my.fit.edu/itresources/manuals/fluent6.3/help/html/udf/node42.htm http://www.engr.uconn.edu/~ewebhk/buttons/flfem/fluent5/training/train89.pdf http://www.ara.bme.hu/oktatas/tantargy/NEPTUN/BMEGEATMW02/2010-2011-I/10b_ANSYS_UDF_Intro.pdf

Batch Mode in FLUENT- use C++ to write/compile the files

-Look at the pdfs I gave you. One of them is on BATCH mode for an earlier version of FLUENT. Shouldn’t be too different with ANSYS. Read in a journal file with commands given in a precise order for your

particular model. Sit back, drink a cup of coffee. Bash in Linux- execute the Batch commnads

Seminar Lunch - Research Plan Presentations - Lab tours - FREE FOOD

Friday

Anything remaining from Thursday Useful FLUENT Wiki link

http://www.cfd-online.com/Wiki/Fluent_FAQ

Solidworks Tutorials

http://www.solidworks.com/sw/resources/solidworks-tutorials.htm WEEK 3 DAILY SCHEDULE:

Start Butterfly Simulations

Monday

John can you show Michael how to run BASh script in linux and Batch mode for FLUENT

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look at the stuff in the email

Tuesday

UDF’s

Sinusoidal Wall Temperature

Temperature Dependent Viscosity

GRE PREP

PDEs

Dynamic Meshing

2D and 3D Adiabatic Compression (3 Tutorials)

GRE PREP

PDEs

Wednesday

Dynamic Meshing and UDF’s

Using UDF’s to control the dynamic mesh of an oscillating membrane

http://www.stanford.edu/class/me469b/handouts/programming.pdf useful UDF link

GRE PREP

PDEs

Thursday

Chase - Construct shark skin model, modify butterfly scale model

Michael - be able to compile and run UDF codes

GRE PREP

PDEs

Friday

Anything left over from Thursday

Begin looking at Rotating Machinery, Multi-phase Flow, Reacting Flow,

GRE PREP

PDEs

Training : FLUENT :

Intermediate/Advanced : Tutorials

http://www.fluentusers.com/fluent/training/intermediate/tutorials/index.htm

Tutorials with a Focus on Reacting Flow Applications

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PDF File| Solution files

Modeling Liquid Reactions in a CIJR using the Unsteady Laminar Flamelet Model

PDF File | Solution Files

Simulation of a Piloted Jet Flame using Unsteady Laminar Flamelet Model

2D Simulation of a 300 KW BERL Combustor Using the Magnussen Model

Premixed Flow in a Conical Chamber using the Finite-Rate Chemistry Model

PDF Transport Simulation of a Piloted Jet Diffusion Flame

Liquid Fuel Combustion

3D Simulation of 300 kW BERL Combustor Using the Laminar Flamelet Model

NOx Modeling with the SNCR Model Using Urea Injection

Modeling Liquid Reactions in a CIJR using the Unsteady Laminar Flamelet Model

Simulation of a Piloted Jet Flame using Unsteady Laminar Flamelet Model

EDC Simulation of a Piloted Jet Diffusion Flame

Premixed Combustion in a Conical Chamber using the Zimont Model

Modeling Surface Reaction in a Single Circular Channel

Multiple Char Reactions

Partially Premixed Combustion in a Coaxial Combustor

Modeling Evaporation of Liquid Droplets in a Circular Channel

Tutorials with a Focus on Multiphase Flow Applications

Heat and Mass Transfer with the Mixture Model

PDF File | Solution files

Hydrodynamics of Bubble Column Reactors

Horizontal Film Boiling

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Model

Using FLUENT's Erosion Model to Investigate Erosion in a 90 degree Elbow Bend

Using the Eulerian Multiphase Model with Species Transport

Modeling Flow and Heat Transfer in Packed Bed Reactor

Modeling Rapid Condensation of Steam in a 2D Laval Nozzle

Solving a 2D Box Falling into Water

Modeling Uniform Fluidization in 2D Fluidized Bed

Modeling Bubble Breakup and Coalescence in a Bubble Column Reactor

Spin Coating of a Rotating Circular Glass Substrate

Fuel Tank Sloshing

Continuous Steel Casting of a Round Billet

Modeling the Effect of Sedimentation Concentration in a Secondary Clarifier using a UDF

Modeling Nucleate Boiling using FLUENT

Tutorials with a Focus on Dynamic Mesh Applications

2D Adiabatic Compression (Remeshing and Spring Smoothing)

2D Adiabatic Compression (Layering)

3D Adiabatic Compression (Layering, Remeshing, and Spring Smoothing)

Solving a 2D Box Falling into Water

Simulating a 2D Check Valve using FLUENT's Dynamic Mesh Model and Spring Smoothing

Submarine Docking Simulation Using MDM Model

Using a UDF to Control the Dynamic Mesh of a Flexible Oscillating Membrane

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Solving a 2D Vibromixer Problem Using the Dynamic Mesh Model

Store Separation from a 3D Delta Wing

Projectile Moving Inside a Barrel

Tutorials with a Focus on User Defined Functions

Calculation of Flow Uniformity

Position Dependent Porous Media

Temperature Dependent Viscosity

Using a UDF to Control the Dynamic Mesh of a Flexible Oscillating Membrane

Sinusoidal Wall Temperature Variation

Modeling the Effect of Sedimentation Concentration in a Secondary Clarifier using a UDF

http://www.stanford.edu/class/me469b/handouts/programming.pdf useful link for UDF’s

Tutorials with a Focus on Heat Transfer Applications

Using Solar Load Model for Indoor Ventilation

Solving a Conjugate Heat Transfer Problem with FLUENT

Tutorials with a Focus on Fuel Cell Applications

SOFC Model

Modeling a Single-Channel, Counter-Flow Polymer Electrolyte Membrane (PEM) Fuel Cell

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Solving Transonic Flow over a Turbine Blade with Turbo-Specific Non-Reflecting Boundary Conditions (NRBCs)

Vane Pump Modeling in FLUENT

CFD FLUENT Research Tutorial on transient Couette flow over a grooved surface

Do the prescribed tutorials mentioned above. Even the structures based tutorials. It is very important for the user to be proficient with the geometry modeler and meshing program in Ansys. These two programs are used for building the model and the mesh used in the analysis, and there is no room for error.

Spend at least two to three days, if not a full week, on learning the Ansys 13 program and finishing all of the tutorials. Afterwards, begin research project.

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In the edevauer of creating a 3D simulation of the butterfly in the CFD solver FLUENT much was learned such as the following: Flate plate boundary layer, simulations, Steady flow past a cylinder simulations,

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Michael

Thompson

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