Reply To: Validation of HLBM
Dear avrachan,
as far as I know, there is no issue with HLBM and the BGK dynamics are validated.
The problems you are facing are very likely due to the choice of parameters.
1) I would suggest to paste your code here, if you like.
2) Please try to reproduce only one configuration from one reference at a time.
3) Then follow the book of Krüger et al. to choose your parameters. I would propose to choose a real physical characteristic length (the side length of your problem domain for example). Then choose the grid spacing and the viscosity and the real physical flow speed (or the Reynolds number alternatively). Then set the lattice velocity to be smaller then 0.1. This will give you the relaxation time and the time step size delta t.
4) Double-check the settings and the results with respect to this one particular physical setting until the solver converges.
5) Please print the converter of this particular setting again.
BR
Stephan