Guys, I have a question. I want to know how to make a good mesh for a 2D analysis of flow over a any airfoil. I need valid results.., when I say valid results, having a experimental data, for example trough airfoiltools.com, according the flows conditions of the experimental flow conditions, obviously, how to create a mesh that obtains a result according to the expected one (experimental result) and that it is a not so refined mesh and with prohibitive time. An example is the mesh used in simulating the edX course for validation case NACA0012. How to apply for any airfoil and have valid results?