i need some knowledge for a turbulent incompressible case.
Could any body write down the correct boundary condition for a turbulent wall resolved mesh.
- U: noSlip
- p: zeroGradient
- k: zeroGradient or fixedValue 0 ?
- nut = calculated?
Please refer to this post: Defining Turbulent Boundary Conditions
Also the names you states for the “wall patch” you have to make a difference between the patch and the actual wall boundary condition:
- Patch: Generic type containing no geometric or topological information about the mesh (inlet, outlet, etc.)
- Wall: Rigid Wall (patch that coincides with a solid wall \rightarrow using wall functions)
The names are identical on the platform. What case are you trying to simulate? Did you already have a look at the Public Project section to look for a template?
thanks you for your link, but i could not find the required information.
What setting the solver is using when Full resolution on wall boundary condition is selected.
what setting are set on the backend for:
- omega (if kOmegaSST turbulence model is used)
- epsilon (if kEpsilon turbulence model is used)
Thank you in advance
This post might help you out about yplus and wall functions in general: What is y+ (yplus)?
- “Full boundary layer Resolution”
- “Wall function approach”
30 < yPlus < 300 (in the logarithmic sublayer)
Current setup: k = kqRWallFunction
omega = omegaWallFunction
epsilon = epsilonWallFunction
nut = nutkWallFunction
Does that help? For further information I would need to delve a bit deeper into it and see what I can find out.
@e0625598 you can find the backend definitions by downloading the solved case file and reading the patch definitions for each variable in time 0.