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March 26, 2004, 03:42 |
Moving interface
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#1 |
Guest
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Hi,
How can I define moving interface (or moving mesh)for two immicible fluid (for example air andwater) in a vertical tube. I tried VOF method but not converged. I don't want to mass diffusion interaction of phases. Thanks... |
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April 7, 2004, 01:03 |
Re: Moving interface
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#2 |
Guest
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Just for using VoF , you do not need the Moving mesh even though the interface is moving! Switch off moving mesh. Use unsteady solver.. Use piso fopr pressure.. Start with a time step say 1 e-3 and inner iteration 50..
Best, Ady |
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April 7, 2004, 03:17 |
Re: Moving interface
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#3 |
Guest
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Dear Andy,
Thanks, for your attention. I defined VOF model my problem, but the interface is interpreted other phase and then uncertain. I dont want phase interaction or mass diffusion. Are there any information this topic. Best regarding, UNAL |
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April 13, 2004, 10:22 |
Re: Moving interface
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#4 |
Guest
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Hi,
U can define motion to interface if u know how it is going to deform. Best way to solve this problem is to use VoF only. I had tried with oil and waiter and it works fine. If the solution depends only on density difference, then try VoF. |
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April 16, 2004, 11:02 |
Re: Moving interface
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#5 |
Guest
Posts: n/a
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Hi Mahesh Thanks...I try to solve this problem is to use VOF only. But I have a convergence problem. I choose time step is 1e-3 and pressure PISO. My fluid is water and air. Are there any other options to define problem.
best regard |
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