twoPhaseEulerFoam for flow inside a cyclonic separator

mali · July 10, 2011, 21:44

Hi All,

I'm wondering if anyone has tried to simulate a flow inside a cyclonic separation using twoPhaseEulerFoam, example air + sand. I'm trying to simulate this problem base on ~/tutorial/multiphase/twoPhaseEulerFoam/bed solver, but the simulation become unstable after a few seconds.

When I tried with one phase only (air) using pisoFoam, the simulation is OK without any problems, and I can see the swirling flow inside the cyclone. I suspect that, with the particle, the centrifugal force make the particle to move very fast and then somehow

... make the simulation unstable (I might be wrong on this). Does anyone have any different idea why I cannot simulate this cyclone geometry?

I'm happy to send the mesh or other files from the three principle folders (~/0 ~/system ~/constant ) if anyone interested.

Cheers

soonic · May 15, 2012, 08:33

HI Mali,

I am iterested in this topic. I would like to do the separator analysis. Do you already have a working case ? Or could you send me the mesh and settings ?

Thanks

Peter

ruma · July 24, 2012, 10:12

Quote:

Originally Posted by mali

Hi All,

I'm wondering if anyone has tried to simulate a flow inside a cyclonic separation using twoPhaseEulerFoam, example air + sand. I'm trying to simulate this problem base on ~/tutorial/multiphase/twoPhaseEulerFoam/bed solver, but the simulation become unstable after a few seconds.

When I tried with one phase only (air) using pisoFoam, the simulation is OK without any problems, and I can see the swirling flow inside the cyclone. I suspect that, with the particle, the centrifugal force make the particle to move very fast and then somehow

... make the simulation unstable (I might be wrong on this). Does anyone have any different idea why I cannot simulate this cyclone geometry?

I'm happy to send the mesh or other files from the three principle folders (~/0 ~/system ~/constant ) if anyone interested.

Cheers

Please send it to me @dutta_ruma@yahoo.com

Jmmymiller · August 1, 2012, 17:05

Please send me the mesh file too.

I heard that, cyclone mesh is quite unstable...I might cause the problem. Anyway, I am working on this twophaseeulerFoam now, and i'm willing to discuss with you guys.

jimmymiller38200@gmail.com

blackbird · May 9, 2013, 01:24

Quote:

Originally Posted by mali

Hi All,

I'm wondering if anyone has tried to simulate a flow inside a cyclonic separation using twoPhaseEulerFoam, example air + sand. I'm trying to simulate this problem base on ~/tutorial/multiphase/twoPhaseEulerFoam/bed solver, but the simulation become unstable after a few seconds.

When I tried with one phase only (air) using pisoFoam, the simulation is OK without any problems, and I can see the swirling flow inside the cyclone. I suspect that, with the particle, the centrifugal force make the particle to move very fast and then somehow

... make the simulation unstable (I might be wrong on this). Does anyone have any different idea why I cannot simulate this cyclone geometry?

I'm happy to send the mesh or other files from the three principle folders (~/0 ~/system ~/constant ) if anyone interested.

Cheers

Hi mali,

Please send it to me if possible.

shingo0323northwind@gmail.com

Thanks.

Shingo,

cfdan · January 23, 2014, 03:58

Hi,

Please send to me at hwzsale@gmail.com

Thanks!

blowback · September 25, 2014, 05:26

Have you found out what was wrong with your settings? Please send me your files, I can try to figure out something. lukasz0004@gmail.com

Thanks you in advance.

July 10, 2011, 21:44	twoPhaseEulerFoam for flow inside a cyclonic separator	#1
mali Member Join Date: Mar 2009 Location: adelaide, SA, Australia Posts: 32 Rep Power: 18	Hi All, I'm wondering if anyone has tried to simulate a flow inside a cyclonic separation using twoPhaseEulerFoam, example air + sand. I'm trying to simulate this problem base on ~/tutorial/multiphase/twoPhaseEulerFoam/bed solver, but the simulation become unstable after a few seconds. When I tried with one phase only (air) using pisoFoam, the simulation is OK without any problems, and I can see the swirling flow inside the cyclone. I suspect that, with the particle, the centrifugal force make the particle to move very fast and then somehow ... make the simulation unstable (I might be wrong on this). Does anyone have any different idea why I cannot simulate this cyclone geometry? I'm happy to send the mesh or other files from the three principle folders (~/0 ~/system ~/constant ) if anyone interested. Cheers __________________ *mali*

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May 15, 2012, 08:33		#2
soonic New Member Peter Join Date: Apr 2010 Location: Brno, Czech Republic Posts: 24 Rep Power: 16	HI Mali, I am iterested in this topic. I would like to do the separator analysis. Do you already have a working case ? Or could you send me the mesh and settings ? Thanks Peter

August 1, 2012, 17:05		#4
Jmmymiller New Member Kuan-Lin Lee Join Date: Jul 2012 Posts: 2 Rep Power: 0	Please send me the mesh file too. I heard that, cyclone mesh is quite unstable...I might cause the problem. Anyway, I am working on this twophaseeulerFoam now, and i'm willing to discuss with you guys. jimmymiller38200@gmail.com

January 23, 2014, 03:58		#6
cfdan New Member Join Date: Sep 2012 Posts: 23 Rep Power: 14	Hi, Please send to me at hwzsale@gmail.com Thanks!

September 25, 2014, 05:26		#7
blowback New Member Tom Join Date: Mar 2014 Posts: 19 Rep Power: 13	Have you found out what was wrong with your settings? Please send me your files, I can try to figure out something. lukasz0004@gmail.com Thanks you in advance.