About interFoam solver

nimasam · July 26, 2010, 04:36

hi sasan
im sure the version of openFoam in ur laptop and and where you run in it parallel is different , in new release of openFoam (1.7) , for stability,"p_rgh" is used instead of "p".

ali805509 · July 26, 2010, 12:36

Thanks Nima and ngi,

That was helpful.

pablodecastillo · April 24, 2011, 17:13

Hello Hrvoje,

As I said, if there are no topological changes, no field mapping gets done. Instead, the integral equations we are discretising are rewritten for the arbitrary moving control volume instead of the static one. There are two effects:
1) the rate of change of the volume in the ddt term (vol and old vol)
2) the relative velocity in the convection term, equal to the difference between the absolute velocity and the mesh motion velocity - that's the mesh.phi() bit in the solver. Once you do that, the mesh motion effect is actually built into the equation itself and the "mapping" you refer to becomes a part of the solution.

Can you tell me what procedures are doing the steps 1) and 2)?, i mean change at volumen and relative velocity correction??

Advanced thanks,

Pablo

nimasam · May 9, 2011, 16:22

hello friend

why this following expression has been added to piso Algorithm
- (fvc::grad(U) & fvc::grad(muEff))

is it for varying mu ?

beacuse i think the effect of varying mu has been seen in :
- fvm::laplacian(muEff, U)

santiagomarquezd · May 9, 2011, 16:35

This is explained in Edin Berberovic's paper and due viscosity spacial variability and the expansion of (nabla U + nabla U^T) term.

Regards.

nimasam · May 9, 2011, 17:47

where can i find this paper?

santiagomarquezd · May 9, 2011, 18:23

I've sent it to the mail published in your contact info.

Regards.

wschosta · May 25, 2011, 17:30

So i've been using interFoam for the past week few weeks now and I'm starting to wonder if it's the best solver for what I'm trying to do (vof and mhd together).

It seems like interFoam, rather than taking properties of each fluid separately, takes properties of the mixture into account.

Is there a different solver that would be more suited to solving two separate fluids such as liquid metal and plasma?

neginmondegari · September 19, 2019, 04:20

hello , I want to model the exterimental flume with the changeable slope and I want to model the bottom outlet with openfoam , is it possible to model it with interfoam? and is it possible to model the dam with changeable slope because of topography and is it possible to model the bottom outlet in dam?

Arghavani · December 2, 2019, 06:39

Hello every one,
Does anybody know about the Algorithm which is used in the MULES method?

May 9, 2011, 16:22	piso algorithm in interFOAM	#124
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,267 Blog Entries: 1 Rep Power: 25	hello friend why this following expression has been added to piso Algorithm - (fvc::grad(U) & fvc::grad(muEff)) is it for varying mu ? beacuse i think the effect of varying mu has been seen in : - fvm::laplacian(muEff, U)

May 9, 2011, 16:35		#125
santiagomarquezd Senior Member Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 452 Rep Power: 24	This is explained in Edin Berberovic's paper and due viscosity spacial variability and the expansion of (nabla U + nabla U^T) term. 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

May 9, 2011, 18:23		#127
santiagomarquezd Senior Member Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 452 Rep Power: 24	I've sent it to the mail published in your contact info. 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

December 2, 2019, 06:39	Mules	#130
Arghavani New Member Deutschland Join Date: Jun 2019 Posts: 21 Rep Power: 7	Hello every one, Does anybody know about the Algorithm which is used in the MULES method?

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July 26, 2010, 04:36		#121
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,267 Blog Entries: 1 Rep Power: 25	hi sasan im sure the version of openFoam in ur laptop and and where you run in it parallel is different , in new release of openFoam (1.7) , for stability,"p_rgh" is used instead of "p".

July 26, 2010, 12:36		#122
ali805509 New Member sasan Join Date: Feb 2010 Posts: 5 Rep Power: 16	Thanks Nima and ngi, That was helpful.

April 24, 2011, 17:13		#123
pablodecastillo Senior Member Pablo Join Date: Mar 2009 Posts: 102 Rep Power: 17	Hello Hrvoje, As I said, if there are no topological changes, no field mapping gets done. Instead, the integral equations we are discretising are rewritten for the arbitrary moving control volume instead of the static one. There are two effects: 1) the rate of change of the volume in the ddt term (vol and old vol) 2) the relative velocity in the convection term, equal to the difference between the absolute velocity and the mesh motion velocity - that's the mesh.phi() bit in the solver. Once you do that, the mesh motion effect is actually built into the equation itself and the "mapping" you refer to becomes a part of the solution. Can you tell me what procedures are doing the steps 1) and 2)?, i mean change at volumen and relative velocity correction?? Advanced thanks, Pablo

May 9, 2011, 17:47		#126
nimasam Senior Member Nima Samkhaniani Join Date: Sep 2009 Location: Tehran, Iran Posts: 1,267 Blog Entries: 1 Rep Power: 25	where can i find this paper?

May 25, 2011, 17:30		#128
wschosta Member Walter Schostak Join Date: May 2011 Posts: 35 Rep Power: 15	So i've been using interFoam for the past week few weeks now and I'm starting to wonder if it's the best solver for what I'm trying to do (vof and mhd together). It seems like interFoam, rather than taking properties of each fluid separately, takes properties of the mixture into account. Is there a different solver that would be more suited to solving two separate fluids such as liquid metal and plasma?

September 19, 2019, 04:20		#129
neginmondegari New Member neginmondegari Join Date: Sep 2019 Posts: 9 Rep Power: 7	hello , I want to model the exterimental flume with the changeable slope and I want to model the bottom outlet with openfoam , is it possible to model it with interfoam? and is it possible to model the dam with changeable slope because of topography and is it possible to model the bottom outlet in dam?