[koalabryant]

Hi¡¡

I'm working on a 2d airfoil and I am not getting good results at high AoA even before the stall.

I have created this modified C-mesh in order to orientate the cells with the flow direction, and I was wondering if it this mesh is ok for this purpose.

With this mesh I get y+~1 and I am using k-omega(2 eqn) SST model.

[ssss]

Which Reynolds number are you using? Could you describe your fvScheme and your fvSolution? Which is the AOA? If it is high maybe your problem is highly unstable and you need to use URANS to solve correctly the geometry

[koalabryant]

Originally Posted by ssss

Which Reynolds number are you using? Could you describe your fvScheme and your fvSolution? Which is the AOA? If it is high maybe your problem is highly unstable and you need to use URANS to solve correctly the geometry

Re 3e6 Alpha 8º
Model: k-omega(2 eqn) SST model
Scheme: Simplec
Gradient: Green Gaus Node Based
Pressure: Second Order
Momentum: Second order Upwind
Turbulent Energy: Second order Upwind
S dissipation rate: Second order Upwind

Boundary Turbulent intensity 1 %

Cl 10% overestimated
Cd 40% overestimated