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-   -   Multiphase + vapor extraction (http://www.cfd-online.com/Forums/star-ccm/102658-multiphase-vapor-extraction.html)

bryan he May 31, 2012 00:47

Multiphase + vapor extraction
 
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!
http://www.cfd-online.com/Forums/Z:\...top\solver.png
http://www.cfd-online.com/Forums/Z:\...p\Geometry.png

bryan he May 31, 2012 15:50

Pictures for model and geometry
 
2 Attachment(s)
Please see the attachment.


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