|April 1, 2013, 14:19||
momentum source and pressure oscillation
Join Date: Jul 2012
Posts: 6Rep Power: 5
I am solving a case with a solver derived from pimpleFoam 2.2.x, where I add a momentum source term into the UEqn.
When solving and watching the initial residual for pressure p, oscillation occurs. With disabled momentum source, no oscillation occurs. The initial pressure residual alternates every time step with magnitude of 10.
timesteps 2n: 1e-4
timesteps 2n+1: 1e-5
The boundary conditions should be okay since the case is a channel with inlet and outlet. I am using k-e turbulence model.
I followed Initial Residual for p too high!. Didn't help...
So maybe someone has a solution or similar problems...
Maybe there is a problem with the pressure correction...
Feel free to answer
|Thread||Thread Starter||Forum||Replies||Last Post|
|Simulation of Axial Fan Flow using A Momentum Source Subdomain||Liam||CFX||28||July 16, 2013 08:24|
|Pressure drop momentum source model||delic||Main CFD Forum||0||June 1, 2012 21:58|
|Pressure jump and momentum source||Tanya||FLUENT||1||June 4, 2009 15:22|
|total pressure drop and momentum source setting||Li||CFX||2||July 28, 2008 02:33|
|2D momentum source for pressure loss||Bernhard Dobmeier||CFX||0||December 5, 2006 05:05|