Re: heated square cavity: compressible
Posted: Tue Mar 08, 2016 1:54 pm
Hello,
You absolutely have to enable the "hydrostatic equilibrium for pressure at walls".
For your given set of parameters (with the physical value of the gravity) a square length of 0.08 should do to obtain a Rayleigh of 1e+6.
Then some other choices might help, initialize velocity at a non-zero, increase the time step.
Also I don't know why you tried to enable the time step limitation with the local thermal time step, but I think you don't need it here.
To modify the square length, use the cs_user_mesh.c, I send you with this message. So that you won't have to regenerate a mesh.
Regards,
Erwan.
You absolutely have to enable the "hydrostatic equilibrium for pressure at walls".
For your given set of parameters (with the physical value of the gravity) a square length of 0.08 should do to obtain a Rayleigh of 1e+6.
Then some other choices might help, initialize velocity at a non-zero, increase the time step.
Also I don't know why you tried to enable the time step limitation with the local thermal time step, but I think you don't need it here.
To modify the square length, use the cs_user_mesh.c, I send you with this message. So that you won't have to regenerate a mesh.
Regards,
Erwan.