DES and LES meshing: tips and advice?
Hello,
I'd like to enquire if any of you can advise me on a tutorial or guidelines on grid generation for DES and LES problems. I understand the meshing is different than RANS, more complex and delicate so I turn to all the great scientists and engineers of the forum for some help! Thank you in advance. James |
Re: DES and LES meshing: tips and advice?
Do not mesh! Just generate a continuous substrate of solids/fluids in your 'domain'. Discretized mesh has to be eilminated. Continuum 'mesh' is the way to do it.
p/s: dont take this too seriously |
Re: DES and LES meshing: tips and advice?
I see... Is there any particular reason as to why discretized mesh is not welcome? What about the boundary layer?
Thanks |
Re: DES and LES meshing: tips and advice?
Do a RANS simulation first. Extract the integral scale and prepare your LES mesh such that your mesh size is about 1/10 of this scale. As for boundaries, refine your mesh to make y+ of order unity close to the wall (LES).
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