[ericclaro]

Hello there,

I am trying to simulate the flow over the supercritical airfoil OAT15A. I have defined a 2D c-grid around it and want to use RANS equations to solve it. So far I have used the SA turbulence model since it yielded the best results. Other settings were taken from RANS simulations I did on su2 that yielded good results.

I am having some trouble converging the simulation. The lowest my Rho residual gets is around -4.5, indeed insufficient. It does not go lower than this and at some point it diverges. I am attaching the cfg file with the simulation configuration that gave the best convergence I got.

I attempted to simulate it using a fine and coarse grid, but both did not converge well enough. I am posting some pictures of the grid as well as of the domain (which in my opinion seems large enough). Boundary layer is discretised with first elements with 5e-6 m height (which in my experience yield decent y+ values).

Please let me know if you have any ideas to improve the convergence of the simulation!