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April 16, 2020, 13:05 |
Volume fraction
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#1 |
New Member
Rohan
Join Date: Mar 2020
Posts: 24
Rep Power: 6 |
Hi,
I am analysing material flow behaviour of a plate in which a tool is rotating and mixing the two fluids (the two parts of the plate here being considered as two fluids). So, what should be the method(coupled/ simple/ simplec/ etc.) and solution controls (value of momentum, pressure, density, volume fractions etc.) to use in the solver? Again what should be the typical value of the courant no. and volume fraction courant number in multiphase flows? And should I use steady or transient method for this type of simulation? |
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April 16, 2020, 14:01 |
Description
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#2 |
Senior Member
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You description is not very clear. A plate as a fluid is rather vague. Could you describe in more detail, may be using a few images?
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Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority. |
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April 16, 2020, 14:18 |
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#3 |
New Member
Rohan
Join Date: Mar 2020
Posts: 24
Rep Power: 6 |
Kindly see the problem statement. (Attached.).
Looking forward to responses in my trailing questions. |
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April 16, 2020, 14:22 |
Fsw
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#4 |
Senior Member
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This appears to be friction stir welding. You can refer the following
https://www.sciencedirect.com/scienc...38785418309268
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Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority. |
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April 16, 2020, 14:25 |
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#5 |
New Member
Rohan
Join Date: Mar 2020
Posts: 24
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But he is using for similar materials. But in my case it is of dissimilar materials i.e. of steel and Aluminium. So what methods and solution controls should I use?
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April 16, 2020, 14:28 |
Species Transport
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#6 |
Senior Member
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Since both the materials are in liquid phase and miscible, you have to use a species transport with two components.
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Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority. |
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April 16, 2020, 14:30 |
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#7 |
New Member
Rohan
Join Date: Mar 2020
Posts: 24
Rep Power: 6 |
Sir I didn't understand. Can you pls elaborate what to do and how?
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April 16, 2020, 14:44 |
Species Transport
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#8 |
Senior Member
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Fluent, and most of the CFD tools, have a model called species transport or multicomponent model. This is different from multiphase models, such as, VOF, Euler-Euler, DPM, etc. Species transport assumes that the components are mixed at molecular level, like oxygen and nitrogen in the air. But their fractions can vary. So, if in your case, the liquids can mix, then you should enable species transport model. Look at the following
https://www.afs.enea.it/project/nept...ug/node512.htm Species transport is compatible with multiphase models, so, you can have both species transport and multiphase together. Species transport will model two liquids as one mixture and multiphase model will model two phases, one represented by the mixture of two liquids and the other could be air around it.
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Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority. |
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Tags |
#ansysfluent #multiphase |
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