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How to set boundary conditions for \tilde{nu} for SA turbulence model? |
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May 7, 2015, 04:37 |
How to set boundary conditions for \tilde{nu} for SA turbulence model?
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#1 |
New Member
Pierluigi Rossi
Join Date: Jul 2014
Location: Milan
Posts: 15
Rep Power: 12 |
Dear SU2 users,
I am new to SU2 and I am trying to run the TestCases/rans/naca0012. Can someone suggest me how to set the freestream boundary condition for nu tilde variable? Thank you very much. Pierluigi |
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May 7, 2015, 08:16 |
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#2 |
New Member
Pierluigi Rossi
Join Date: Jul 2014
Location: Milan
Posts: 15
Rep Power: 12 |
I have found in the src code (SU2_CFD/src/solver_direct_turbulent.cpp line 1111) the following lines:
Code:
/*--- Factor_nu_Inf in [3.0, 5.0] ---*/ Factor_nu_Inf = config->GetNuFactor_FreeStream(); nu_tilde_Inf = Factor_nu_Inf*Viscosity_Inf/Density_Inf; So I have to define a FREESTREAM_NU_FACTOR = 4.0 in the config.cfg file to get a new value? Is 3.0 the default? Where can I search this information? Thank you so much. Pier |
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May 12, 2015, 13:22 |
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#3 | |
Senior Member
Vino
Join Date: Mar 2013
Posts: 130
Rep Power: 13 |
Quote:
Hi, Yes. FREESTREAM_NU_FACTOR will work in config file. The default value is set as 3.0. You can find this in config_structure.cpp file. looks like this. Code:
/* DESCRIPTION: */ addDoubleOption("FREESTREAM_NU_FACTOR", NuFactor_FreeStream, 3.0); |
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May 12, 2015, 14:16 |
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#4 |
New Member
Pierluigi Rossi
Join Date: Jul 2014
Location: Milan
Posts: 15
Rep Power: 12 |
Thank you so much Vino.
Best regards, Pier |
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rans, spalart allamras |
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