Dear Gmsh Experts,

I'm a newbie with Gmsh and open-source softwares, and as my first project, I'm trying to do a 2D CFD simulation around an airfoil using openFOAM. I want to develop a method which I can use in all future CFD projects. For this reason, I'm trying to simulate flow around a NACA airfoil, for which standard test data is available. I'm using a c-grid hexa mesh for the airfoil. Initial trials have produced results which are a bit erroneous. I believe the problem can be solved by producing a good boundary layer mesh, with a suitable first layer distance based on a y+ value. But I cannot find a good source which would guide me through the process of specifying a first layer distance of the mesh from the airfoil wall. Kindly tell me a method (set of commands and how to use them) I can use to do what I intend to do or, if possible, point me to a source which would give a proper tutorial on how to do a good boundary layer mesh.


Thanks and regards,

Kushagra Vidyarthi


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