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Old   February 12, 2009, 05:31
Default Now I start to try to use oodl
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xinguang cui
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Now I start to try to use oodles to solve the flow in a constricted tube.

But in fact, I don't know the meaning of the coefficients in the folder of 0. what is the meaning of B,nuSgs, nuTilda? who would like to tell me?

I also don't know the meaning of the coefficients in the file of LESProperties?

Who could tell me how I could know it?
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Old   February 12, 2009, 17:53
Default Hi Xiaoguang B is sub-g
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Hi Xiaoguang

B is sub-grid stress tensor
nuSgs is sub-grid viscosity
NuTilda is kinematic turbulent viscosity

The coefficients are model-dependent

See the model implementation of sgs model in

/home/sujunwei/OpenFOAM/OpenFOAM-1.5.x/src/turbulenceModels/LES/incompressible/

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Old   February 13, 2009, 02:58
Default Thanks for your response. I wi
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Thanks for your response. I will check it.
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Old   February 13, 2009, 03:29
Default Thanks for your response. I wi
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Thanks for your response. I will check it. In addition, for the treatment of flow near the wall, do I need to handle it additionally? Does it include in the sgs model?
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Old   March 12, 2009, 22:18
Default It depends. Try to start from
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It depends. Try to start from channelOodles, pay attention to LESproperties file, there near wall treatment is specfied.

Anyway, it is also model-dependent.
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