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October 13, 2009, 15:11 |
soild-liquid mixing
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#1 |
New Member
sanaz
Join Date: Oct 2009
Posts: 9
Rep Power: 16 |
Hi, I am simulating the liquid-solid flow using FLUENTin in stirred tanks using impeller. My problem is that when I go to the multiphase model, it does not read the solid material and how to build geometry (for soild) in gambit?. How can I make it reads the solid phase in the multiphase model? Thanking you for any help regarding this problem.
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October 14, 2009, 09:19 |
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#2 |
Member
JP
Join Date: Mar 2009
Posts: 57
Rep Power: 18 |
Which multiphase model are you using? I suppose you are dealing with solid particles and running Eulerian model. In that case you don't need any mesh for the solids.
You can create a new fluid, give it the solid density, and a very high viscosity and name it your "solid". In the phases window, give the particle diameter for the solids. Initialize with the known solids volume fraction, and you can now run the simulation. |
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October 14, 2009, 09:49 |
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#3 |
New Member
sanaz
Join Date: Oct 2009
Posts: 9
Rep Power: 16 |
thanks.
I don't need any sapce or volume for soild in built geometry in gambit???!! this is gepmetry of built in gambit http://rapidshare.com/files/292889214/rush.JPG.html |
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October 14, 2009, 10:20 |
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#4 |
Member
JP
Join Date: Mar 2009
Posts: 57
Rep Power: 18 |
What form are the solids? Are they particulate?
Normally you don't need a mesh for the solids (unless you are doing conductive heat transfer, or deforming solids). You can create a 'super viscous' liquid and use it as your solid. you can define the solid particle diameter and the initial volume fraction (in Initialize panel) and then run the simulation. |
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October 14, 2009, 11:32 |
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#5 |
New Member
sanaz
Join Date: Oct 2009
Posts: 9
Rep Power: 16 |
They are particulat.I have not any haet transfer or deforming soilids.It means only in fluent i define solid??
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October 15, 2009, 02:32 |
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#6 |
Member
JP
Join Date: Mar 2009
Posts: 57
Rep Power: 18 |
You are right. You don't need to define these solid particles in Gambit. Your geometry is fine. You can define the fluid and solid in fluent and continue.
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