no convergence at high pressure
 

Hi,

I cannot reach the convergence criteria (1E-04) at 60 bar (SST, 2.2 million nodes, v=62 m/s, mesh quality nice). If I choose the pressure 1 bar, then I have a nice convergence after 100 steps. Please have somebody any idea how I can solve the problem? Thank you very much. Toralf

Re: no convergence at high pressure
 

Hi,

Does the higher pressure induce higher flow velocities? Is it compressible flow so therefore it chokes? Higher flow velocities or significant compressibility effects often will slow convergence.

Glenn Horrocks

Re: no convergence at high pressure
 

Check reference pressure that you are setting. For, good convergence, it should be near to the pressure at which CFD domain is at.