DSMC solver in OpenFoam

flatorre · September 9, 2008, 12:23

Good afternoon everybody,
does anyone know if there is integrated in OpenFOAM a DSMC solve and/or if there are any groups dealing with this topic.
Thanks a lot! F.

sushant · April 23, 2009, 08:29

AFAIK OpenFOAM does not come with a DSMC solver.

For a successful attempt at using OpenFOAM for DSMC see the paper by Hauser and Allen of Utah State University. You can find it at:

http://www.opensourcecfd.com/confere...0b8b978b532798

alberto · April 24, 2009, 03:30

Hi Sushant,

do you know if the code has been released by the Authors or is available somewhere?

Thanks,

archymedes · April 8, 2010, 12:56

dsmcFoam is distributed with release OpenFoam 1.6

Has anyone tried to couple dsmcFoam and OF (CFD-DSMC hybrid) ?

Marta · July 8, 2010, 05:28

Hi all! I've been very busy with other stuff these days, only now i'm going back to dsmc... Unfortunately I have another problem.
Do you know how to set different initial particle numbers in different zones of the domain?
Do i have to prepare the mesh on purpose to be able to do this?

Thank you very much in advance

Marta

archymedes · July 8, 2010, 05:44

Sorry marta I don't know, would like to know myself.

But i think there is a way as at the beginning of every initialisation it searches for a POSITIONS file which should contain information about the particle cloud i guess.

No idea how to create this, but I think u can use former sim data to obtain such a file ?!

Marta · July 8, 2010, 05:50

Ok, Archy, I will try and see ...i'll tell you how to do this, if i'm able to find out!

Thx

Marta

hyperion · July 28, 2010, 21:04

I think you can set the rhoN or rhoM to different values for different patches in the time 0 directory. I haven't tried yet, so I could be completely wrong. The only problem I see with this is that rhoM and rhoN are linked, so I would think you might need to change both. Just thought I'd throw it out there as an possible solution.

September 9, 2008, 12:23	Good afternoon everybody, doe	#1
flatorre New Member Federico Join Date: Mar 2009 Location: Delft, The Netherlands Posts: 1 Rep Power: 0	Good afternoon everybody, does anyone know if there is integrated in OpenFOAM a DSMC solve and/or if there are any groups dealing with this topic. Thanks a lot! F.

April 23, 2009, 08:29	DSMC Solver	#2
sushant Member Join Date: Mar 2009 Location: Switzerland Posts: 40 Rep Power: 17	AFAIK OpenFOAM does not come with a DSMC solver. For a successful attempt at using OpenFOAM for DSMC see the paper by Hauser and Allen of Utah State University. You can find it at: http://www.opensourcecfd.com/confere...0b8b978b532798

April 24, 2009, 03:30		#3
alberto Senior Member Alberto Passalacqua Join Date: Mar 2009 Location: Ames, Iowa, United States Posts: 1,912 Rep Power: 36	Hi Sushant, do you know if the code has been released by the Authors or is available somewhere? Thanks, __________________ Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using.

April 8, 2010, 12:56	in realease 1.6	#4
archymedes Member Claus Schmitzer Join Date: Mar 2010 Posts: 30 Rep Power: 16	dsmcFoam is distributed with release OpenFoam 1.6 Has anyone tried to couple dsmcFoam and OF (CFD-DSMC hybrid) ?

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July 8, 2010, 05:28		#5
Marta Member Marta Lazzarin Join Date: Jun 2009 Location: Italy Posts: 71 Rep Power: 17	Hi all! I've been very busy with other stuff these days, only now i'm going back to dsmc... Unfortunately I have another problem. Do you know how to set different initial particle numbers in different zones of the domain? Do i have to prepare the mesh on purpose to be able to do this? Thank you very much in advance Marta

July 8, 2010, 05:44		#6
archymedes Member Claus Schmitzer Join Date: Mar 2010 Posts: 30 Rep Power: 16	Sorry marta I don't know, would like to know myself. But i think there is a way as at the beginning of every initialisation it searches for a POSITIONS file which should contain information about the particle cloud i guess. No idea how to create this, but I think u can use former sim data to obtain such a file ?!

July 8, 2010, 05:50		#7
Marta Member Marta Lazzarin Join Date: Jun 2009 Location: Italy Posts: 71 Rep Power: 17	Ok, Archy, I will try and see ...i'll tell you how to do this, if i'm able to find out! Thx Marta

July 28, 2010, 21:04		#8
hyperion Member Daniel Join Date: Jul 2010 Location: California Posts: 39 Rep Power: 16	I think you can set the rhoN or rhoM to different values for different patches in the time 0 directory. I haven't tried yet, so I could be completely wrong. The only problem I see with this is that rhoM and rhoN are linked, so I would think you might need to change both. Just thought I'd throw it out there as an possible solution.