Grid resolution
CFD solutions are typically more sensitive to grid resolution than the turbulence model and convective flux discretization, so it is recommended to establish proper grid resolution first.
Reference
Cetin Kiris, Jeffrey Housman, Marshall Gusman, Daniel Schauerhamer, Karen Deere, Alaa Elmiligui, Khaled Abdol-Hamid, Edward Parlette, Mark Andrews, and John Blevins.
49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. January.
49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition. January.