SU2 Turbulence Model Coefficients

mcangul · May 10, 2018, 15:39

Hello, I would like to change the Betastar which is in the k-w turbulence model equation. How can I do it?

LaurentvdB · May 16, 2018, 09:16

Hi there,

This is not possible by default (at the time of writing, v6.0.1). The turbulence constants are hardcoded in the source. Recently I have been trying to do the same thing.

Fortunately it is not too hard to change the constant. It is defined on line 3325 of the file solver_direct_turbulent.cpp, see:
https://github.com/su2code/SU2/blob/...lent.cpp#L3325

If you want to change the constant very often, I suggest that you make it a configuration parameter. For that to happen, you can add the parameter in the following files:
- Common/src/config_structure.cpp
- Common/include/config_structure.inl
- Common/include/config_structure.hpp
All files already include countless examples of how configuration parameters can be added in this way.

Note that SU2 is open source software under the LGPL license. This means that if you distribute your changed version in binary form you also have to redistribute your source code. I am not a lawyer and not an expert on licenses, so if you are going to redistribute your changes read the file LICENSE

May 10, 2018, 15:39	SU2 Turbulence Model Coefficients	#1
mcangul New Member Ankara Join Date: May 2018 Posts: 2 Rep Power: 0	Hello, I would like to change the Betastar which is in the k-w turbulence model equation. How can I do it?

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May 16, 2018, 09:16		#2
LaurentvdB New Member Laurent van den Bos Join Date: Jun 2015 Posts: 4 Rep Power: 11	Hi there, This is not possible by default (at the time of writing, v6.0.1). The turbulence constants are hardcoded in the source. Recently I have been trying to do the same thing. Fortunately it is not too hard to change the constant. It is defined on line 3325 of the file solver_direct_turbulent.cpp, see: https://github.com/su2code/SU2/blob/...lent.cpp#L3325 If you want to change the constant very often, I suggest that you make it a configuration parameter. For that to happen, you can add the parameter in the following files: - Common/src/config_structure.cpp - Common/include/config_structure.inl - Common/include/config_structure.hpp All files already include countless examples of how configuration parameters can be added in this way. Note that SU2 is open source software under the LGPL license. This means that if you distribute your changed version in binary form you also have to redistribute your source code. I am not a lawyer and not an expert on licenses, so if you are going to redistribute your changes read the file LICENSE