I am having trouble with my CFD simulation. I am trying to simulate the airflow around a rear wing for a student car, and the results don’t seem to be converging. I have set up the enclosure and the boundary conditions correctly to the best of my knowledge and there doesn’t seem to be any error in my CAD, so I am unsure as to what is triggering the unstable behaviour in the simulation. I tried making the mesh extremely fine but there is still no result. I am trying to find the overall lift and drag coefficients, and also the individual forces which are acting on the upper and middle blade as I am trying to implement a DRS type system by changing the angle of attack of the airfoils.
Any help would be greatly appreciated, thank you.