|November 2, 2010, 04:35||
Velocity Pressure Coupling
Join Date: Aug 2009
Location: Braunschweig, Germany
Posts: 200Rep Power: 10
I have a question regarding the pressure velocity coupling in OpenFoam. When I look at the literature, the velocity is first predicted by the equation u*=(1/A_p)*(H(u*)-grad(p_old)). Then the velocity is corrected by using the simple or piso algorithm.
However, when I look at the source code of e.g. rhoSimpleFoam, the velocity prediction is done by u*=(1/a_p)*H(u*). Why is the part of the equation containing the old pressure missing in OpenFoam?
|November 2, 2010, 17:14||
rhoSimpleFoam is a compressible solver
Daniel P. Combest
Join Date: Mar 2009
Location: St. Louis, USA
Posts: 581Rep Power: 20
rhoSimpleFoam is a compressible solver, so I'm not familiar with it. Take a look at simpleFoam for the simple algorithm and icoFoam for the PISO algorithm. also, here is a quick explanation of the PISO algorithm in icoFoam.
Hope this helps
|Thread||Thread Starter||Forum||Replies||Last Post|
|Pressure farfield vs Velocity Inlet BC||DarrenC||FLUENT||1||September 16, 2009 02:23|
|Pressure velocity coupling||L Raiyaz Ahamed||CFX||1||August 29, 2009 11:08|
|How to set pressure BC with mass Velocity Magnitud||arwang||FLUENT||2||March 12, 2007 21:04|
|Velocity in Porous medium : HELP! HELP! HELP!||Kali Sanjay||Phoenics||0||November 6, 2006 07:10|
|what the result is negatif pressure at inlet||chong chee nan||FLUENT||0||December 29, 2001 06:13|