I have two questions about a simulation using the kOmegaSSTIDDES model.
I want to have ABL inflow conditions, and I have already coded an ABL inflow boundary condition for Omega.
Q1) Is it sufficient to use the mean velocity profile set out by Richards and Hoxey (1), or should I use “time dependent inflow conditions” as stated in the COST best practice guidelines (2) for URANS/LES? I’m guessing maybe some sort of cyclic condition.
Q2) Given that I am using the kOmegaSST model I should have y+ < 1 everywhere on the walls, can I still use wallfunctions in this case, or should I employ fixed value or zero gradient conditions depending on the variable? Basically, will it make a difference if I just leave the boundary conditions as wallfunctions given that it’s so far within the viscous sublayer?
Thank you, and any advice would be happily received.