Reply To: Stability of 3D thermal LBM model
Dear Dr. Gaedtke,
Thank you for your response. I strongly agree that turbulence is a 3D process. However, in the case of the differentially heated cavity 2D model is also fine as the first approximation which gives similar patterns to 3D.
I am trying to perform a pseudo-direct numerical simulation to make the model free from empirical constants. What concerns LES, Smagorinsky model works fine in 3D. But Cs significantly affects both the results and numerical stability. BTW, when I did the literature review I read the paper you mentioned