Difference between revisions of "Sig Turbulence / Collection of additional turbulence models"
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at least the results are similar to the default tutorial for the Launder-Sharma model; I did not test a u+/y+ view yet...). | at least the results are similar to the default tutorial for the Launder-Sharma model; I did not test a u+/y+ view yet...). | ||
I would be nice, if you can test the model on your test case and give some suggestion for improvement!? | I would be nice, if you can test the model on your test case and give some suggestion for improvement!? | ||
+ | Basically I just coupled the boundary conditions for omega, the turbulent kinetic energy production and viscosity for the low-Re and high-Re case using a function like exp(-Gamma). | ||
+ | Right now, I set the values in the wall nearest cell (faceCelli), though I am not sure, if they have to get set at the boundary face (facei) as well!? | ||
* Literature | * Literature |
Revision as of 15:18, 24 March 2009
1 Comment
This site should be a collection of new implemented turbulence models
As soon as the model is stable and does not need any further developing, it should be marked and copied to svn.
2 Incompressible
2.1 RANS
2.1.1 v2f family
2.1.1.1 v2-f
- Field of application
- Short description
- Problems / Difficulties with the implementation
- Literature
- Small Example Case
- Download
2.1.1.2 zeta-f
- Field of application
- Short description
- Problems / Difficulties with the implementation
- Literature
- Small Example Case
- Download
2.1.2 Models with advanced wall treatment
2.1.2.1 kOmega-SST (CWT)
- Short description
This model is based on the 'default' OpenFoam kOmegaSST implementation with some adjustemts to get an enhanced/compound wall treatment (similar to FLUENT). The implementation is based on Popovac/Hanjalic.
- Problems / Difficulties with the implementation
It seems to work for some meshes quite well (the range up to y+=0.3-10 and from 20- around 40 (?) works well, at least the results are similar to the default tutorial for the Launder-Sharma model; I did not test a u+/y+ view yet...). I would be nice, if you can test the model on your test case and give some suggestion for improvement!? Basically I just coupled the boundary conditions for omega, the turbulent kinetic energy production and viscosity for the low-Re and high-Re case using a function like exp(-Gamma). Right now, I set the values in the wall nearest cell (faceCelli), though I am not sure, if they have to get set at the boundary face (facei) as well!?
- Literature
Popovac, M., Hanjaliæ, K., 2007, Compound wall treatment for RANS computations for complex turbulent flows and heat transfer. Flow, Turbulence and Combustion, 78(2), 177-202
http://repository.tudelft.nl/file/354721/370010
- Small Example Case
This is aquite simple test case for RANS models based on the boundaryFoam tutorial. It should be quite simple to run.
- Download
Valid versions: http://openfoamwiki.net/index.php/Image:Xing.zip