Multiphase + vapor extraction

bryan he · May 31, 2012, 00:47

Hi all,
I'm simulating such case: a flow is between parallel plates. A constant heat flux added on the bottom plate, while a porous media is placed above the top plate. The aim is to extract vapor generated from water (no boiling, pure evaporation) through the porous media.
Does anyone know how should I select the solver for this problem? I tried multiphase segregate flow model. But it didn't work.
Thank you very much!
Bryan

siara817 · May 31, 2012, 04:48

Can you explain more about your model selection ( which multiphase, lagrangian or eulerian?). Moreover, what was the problem that it did not work? How did you select the porous region?

bryan he · May 31, 2012, 15:49

Sure. I use Eulerian multiphase model. You can see the detail in the picture. The problem is after only 27 steps, the troubleshooting error happens. I tried to change initial conditions more physically reasonable. But the error still happened.
The basic geometry is shown too. Upper part is porous region and lower part is fluid region.
I really appreciate if somebody can give some suggestions!

bryan he · May 31, 2012, 15:50

Please see the attachment.

May 31, 2012, 00:47	Multiphase + vapor extraction	#1
bryan he New Member Join Date: Apr 2012 Location: OR USA Posts: 12 Rep Power: 14	Hi all, I'm simulating such case: a flow is between parallel plates. A constant heat flux added on the bottom plate, while a porous media is placed above the top plate. The aim is to extract vapor generated from water (no boiling, pure evaporation) through the porous media. Does anyone know how should I select the solver for this problem? I tried multiphase segregate flow model. But it didn't work. Thank you very much! Bryan

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May 31, 2012, 04:48		#2
siara817 Senior Member siamak rahimi ardkapan Join Date: Jul 2010 Location: Copenhagen, Denmark Posts: 220 Rep Power: 17	Can you explain more about your model selection ( which multiphase, lagrangian or eulerian?). Moreover, what was the problem that it did not work? How did you select the porous region?

May 31, 2012, 15:49		#3
bryan he New Member Join Date: Apr 2012 Location: OR USA Posts: 12 Rep Power: 14	Sure. I use Eulerian multiphase model. You can see the detail in the picture. The problem is after only 27 steps, the troubleshooting error happens. I tried to change initial conditions more physically reasonable. But the error still happened. The basic geometry is shown too. Upper part is porous region and lower part is fluid region. I really appreciate if somebody can give some suggestions!