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February 21, 2018, 00:20 |
Geometry of porous medium
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#1 |
New Member
The Shard
Join Date: Feb 2018
Location: United Kingdom
Posts: 4
Rep Power: 8 |
How do I make a geometry for a porous media and then mesh it? What softwares can I use?
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February 21, 2018, 02:28 |
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#2 | |
Senior Member
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Quote:
P.S. Try reading some papers and then ask more appropriate question. |
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February 21, 2018, 07:11 |
I'm trying to construct the internal geometry of the membrane/porous media itself
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#3 | |
New Member
The Shard
Join Date: Feb 2018
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I'm trying to construct the internal geometry of the membrane/porous media itself. I know that you can create a porous media using the method you mentioned but that is not my question.
Quote:
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February 21, 2018, 22:50 |
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#4 |
Senior Member
Lane Carasik
Join Date: Aug 2014
Posts: 692
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Like ashokac7 stated, Star-CCM+, ANSYS FLUENT, ANSYS CFX, OpenFOAM, others can model this program. This is a very generic CFD problem (you can use a unit cell representation).
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February 22, 2018, 01:41 |
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#5 |
Senior Member
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This is really your choice though. Like if only pressure drop is concerned to you it is not advisable to model the whole porous structure. Porous approach is sufficient for that. But if you want to model each and every layer/membrane in porous media, that's tricky. Think in terms of resource you need for that. Like between two adjacent layers, we have to put atleast 4-5 layers in between so that CFD have some domain to make calculations there. This is also on the top of refinement we have to do to capture exact surface feature which also increase the mesh count exponentially. And this is why porous coefficient approach come to existence, isn't it?
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February 22, 2018, 02:01 |
Porous Media
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#6 |
New Member
The Shard
Join Date: Feb 2018
Location: United Kingdom
Posts: 4
Rep Power: 8 |
I'm trying to work with many factors including pressure drop. I have the pore diameter, length of pores, number of pores in given area and thickness of membrane. I'm encountering a problem when I construct the geometry because the diameter of the pore is in nanometre (1.8 nm) and the area is in mm(0.8mm*0.8mm). I tried working this out in Catia but in vain. Even if if do model it in these dimensions, I guess it will pose meshing problems?
I want to know how to approach this situation. |
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February 22, 2018, 03:25 |
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#7 | |
Senior Member
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Darcy's law is there to deal with these cases.Even if you are able to create the geometry in Catia how will you model it here. The factors you have maintained will be taken care by porous coefficients. |
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Tags |
geometry, membrane, meshing, porous domain |
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