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March 4, 2012, 21:53 |
Mutiphase flow solver
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#1 |
New Member
Tarsilo Girona
Join Date: Mar 2012
Posts: 1
Rep Power: 0 |
Dear OpenFoam Community,
I hope everything is fine with you. I have some doubts with OpenFoam that I would like to share with you. Maybe you can solve them. I am using the multiphase flow solver TwoLiquidsMixingFoam. The momentum equation is in Ueqn.H. I don't understand: ****************************** 1) Why the gravity term is ghf*fvc::snGrad(rho) instead of only ghf*rho Why this surface normal gradient in rho?? ************************************************** ***************** 3) Why the pressure gradient term is: fvc::snGrad(p_rgh) instead of only fvc:: grad(p_rgh) Why surface normal gradient? ****************************** Does anyone have any idea??? Any suggestions are welcome. Thanks a lot in advance Last edited by TGH; March 5, 2012 at 01:05. |
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March 20, 2012, 09:59 |
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#2 |
Senior Member
Santiago Marquez Damian
Join Date: Aug 2009
Location: Santa Fe, Santa Fe, Argentina
Posts: 452
Rep Power: 23 |
Hi, check the following thread, particularly the post #9
http://www.cfd-online.com/Forums/ope...-pressure.html Regards
__________________
Santiago MÁRQUEZ DAMIÁN, Ph.D. Research Scientist Research Center for Computational Methods (CIMEC) - CONICET/UNL Tel: 54-342-4511594 Int. 7032 Colectora Ruta Nac. 168 / Paraje El Pozo (3000) Santa Fe - Argentina. http://www.cimec.org.ar |
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