Defined Wall Shear Stress Boundary Condition
Hello everybody,
I want to implement a boundary condition, where I can define the shear stress at a wall. First I tried to adopt the mutWallFunction for my purpose and modified it to calculate the turbulent viscosity as follows Code:
mut = tauWall / gradU - mu Unfortunately this only works well for coarse meshes. In other cases the velocity gradient becomes to large and the turbulent viscosity gets negative. Is there a better way to implement such a boundary condition? Thanks for your help! Regards Martin |
You could create a specific wall boundary condition for U that overrides the snGrad fvPatchField function so as to provide a wall velocity gradient equal to: gradU = tauw / nutw
|
All times are GMT -4. The time now is 07:13. |