Reply To: Parameters for moderate Re flow
Hello all,
if you believe that bounce back might be the cause, then I’d suggest to try another boundary condition, see examples/laminar/poiseuille2d for a few options and to compare them.
@nipinl it’s great that you already considered the stable limits for the parameters. When you consult the paraview output, can you identify where the problem originates? For example some corner cell or at the inlet or outlet? Another example: If you have the inlet or outlet right next to a “wall” cell, then perhaps this causes problems.
In general I suggest the following:
– Where is the origin? Is there some pulsing? (then consider increasing the startup time or the simulated physical time frame) Is it located at a certain location in the geometry? Etc.
– Check the geometry, are the material numbers as you expect them? Are there any areas with potential conflict (like the example I gave above)?
Once we know a little more details, perhaps we can find the underlying problem easier.
Best regards,
Jan