VOF (interfoam) vs moving mesh (icoDymfoam)

michielm · October 29, 2010, 03:56

Hi all,
I am pretty new to OpenFOAM and I was wondering if you guys have some advice on the usage of either of the two methods specified in the title for a surface tension dominated two-phase flow problem.

Thanks in advance!

LarsPT · October 29, 2010, 12:12

Hi,

I use interFoam for capillary driven flows and I don't think that you can use icoDymFoam for a multiphase flow as it is just solving for single phase flow with a dynamic mesh. So surface tension effects are, as far as I know, not modeled in icoDymFoam but in interFoam. Please correct me, if you know better.

Best regards,

Lars

michielm · October 29, 2010, 12:16

well, I am not sure. But if the dynamic mesh solver can do free-surface boundaries then it can be used for gas-liquid systems by neglecting the density and viscosity of the gas.

Does it have a free-surface bc?

ngj · October 29, 2010, 12:27

Hi Michiel

Maybe you should consider the following article to be inspired from:

http://powerlab.fsb.hr/ped/kturbo/Op...tionFAMENA.pdf

Have a nice weekend

Niels

michielm · October 29, 2010, 12:37

Hi Niels,
Yes that is exactly what I am looking for! Thanks!

Do you know whether that solver is already available in OpenFOAM 1.7.1 ?

A good weekend to you too

Michiel

ngj · October 29, 2010, 13:38

Hi Michiel

It has been a while since I read the article, so I do not know (1) what is the name of the solver they are using and (2) whether or not it is available in 1.7.x. If you could make a summary regarding (1) someone (or I) might be able to help you further.

Based on the authors, I would guess that the solver might be available through the OpenFoam-extend in version 1.5-dev.

Best regards,

Niels

akidess · October 29, 2010, 13:48

Michiel, I think that paper describes interTrackFoam, which can be found in the community version of OpenFoam (OpenFoam extend develop).

michielm · October 29, 2010, 13:51

Great! Thanks guys, thanks anton!

daveatstyacht · November 1, 2010, 14:54

Have you considered using interDyMFoam? It is a VOF, dynamic mesh solver already present in at least 1.7 if not in earlier versions.

michielm · November 1, 2010, 15:10

Hi Dave,
I think interDyMFoam is a very good choice if I opt for the VOF method. I do think however that I will prefer Langrangian interface tracking (like interTrackFoam has) because I am very much interested in the precise surface curvature

But thanks for the suggestion!

October 29, 2010, 03:56	VOF (interfoam) vs moving mesh (icoDymfoam)	#1
michielm Member Michiel Join Date: Oct 2010 Location: Delft, Netherlands Posts: 97 Rep Power: 15	Hi all, I am pretty new to OpenFOAM and I was wondering if you guys have some advice on the usage of either of the two methods specified in the title for a surface tension dominated two-phase flow problem. Thanks in advance!

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October 29, 2010, 12:12		#2
LarsPT Member Lars Kiewidt Join Date: Sep 2009 Location: Germany Posts: 54 Rep Power: 16	Hi, I use interFoam for capillary driven flows and I don't think that you can use icoDymFoam for a multiphase flow as it is just solving for single phase flow with a dynamic mesh. So surface tension effects are, as far as I know, not modeled in icoDymFoam but in interFoam. Please correct me, if you know better. Best regards, Lars

October 29, 2010, 12:16		#3
michielm Member Michiel Join Date: Oct 2010 Location: Delft, Netherlands Posts: 97 Rep Power: 15	well, I am not sure. But if the dynamic mesh solver can do free-surface boundaries then it can be used for gas-liquid systems by neglecting the density and viscosity of the gas. Does it have a free-surface bc?

October 29, 2010, 12:27		#4
ngj Senior Member Niels Gjoel Jacobsen Join Date: Mar 2009 Location: Copenhagen, Denmark Posts: 1,900 Rep Power: 37	Hi Michiel Maybe you should consider the following article to be inspired from: http://powerlab.fsb.hr/ped/kturbo/Op...tionFAMENA.pdf Have a nice weekend Niels

October 29, 2010, 12:37		#5
michielm Member Michiel Join Date: Oct 2010 Location: Delft, Netherlands Posts: 97 Rep Power: 15	Hi Niels, Yes that is exactly what I am looking for! Thanks! Do you know whether that solver is already available in OpenFOAM 1.7.1 ? A good weekend to you too Michiel

October 29, 2010, 13:38		#6
ngj Senior Member Niels Gjoel Jacobsen Join Date: Mar 2009 Location: Copenhagen, Denmark Posts: 1,900 Rep Power: 37	Hi Michiel It has been a while since I read the article, so I do not know (1) what is the name of the solver they are using and (2) whether or not it is available in 1.7.x. If you could make a summary regarding (1) someone (or I) might be able to help you further. Based on the authors, I would guess that the solver might be available through the OpenFoam-extend in version 1.5-dev. Best regards, Niels

October 29, 2010, 13:48		#7
akidess Senior Member Anton Kidess Join Date: May 2009 Location: Germany Posts: 1,377 Rep Power: 29	Michiel, I think that paper describes interTrackFoam, which can be found in the community version of OpenFoam (OpenFoam extend develop).

October 29, 2010, 13:51		#8
michielm Member Michiel Join Date: Oct 2010 Location: Delft, Netherlands Posts: 97 Rep Power: 15	Great! Thanks guys, thanks anton!

November 1, 2010, 14:54		#9
daveatstyacht Senior Member Dave Join Date: Jul 2010 Posts: 100 Rep Power: 15	Have you considered using interDyMFoam? It is a VOF, dynamic mesh solver already present in at least 1.7 if not in earlier versions.

November 1, 2010, 15:10		#10
michielm Member Michiel Join Date: Oct 2010 Location: Delft, Netherlands Posts: 97 Rep Power: 15	Hi Dave, I think interDyMFoam is a very good choice if I opt for the VOF method. I do think however that I will prefer Langrangian interface tracking (like interTrackFoam has) because I am very much interested in the precise surface curvature But thanks for the suggestion!