[josip76]

Hey,

I solved for the aerodynamic properties of a RAE2822 airfoil (hex meshed in ICEM) in fluent using the RANS density based solver and S-A model. Once the solution has converged 5e-6 i find through examining the force monitors that the lift is accuretly predicted within 1% but that the drag coefficient is over predicted by 20% and the moment coefficient is under predicted by 20%. I have refined the mesh however my answer does not change so i dont think this is to do with the grid refinement. For my turbulence specification ive used the viscosity ratio of 10. Ive tried playing with this and lowering it all the way to 1 but this has been no help.

Thanks for the help