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3 phase flow convergence problem

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Old   June 7, 2013, 00:47
Default Multiphase convergence problem
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EMAVI V SURYA SAMPATH
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Hi all,

I am working on a case study- oil , gas water separator ( 3 phase flow).
Getting convergence problem with continuity residual.
can any1 help me ?
Using pressure based , eulerian model with energy equation.

Thanks in advance
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Old   June 7, 2013, 01:51
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Vignesh KPV
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Hi,

Once check all the values that are been defined to boundary conditions.
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Old   June 7, 2013, 05:21
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hi,

boundary conditions are fine. even I am getting the results . But residuals are not converging. All my contour plots are matching with the case study results. But how to reach the convergence ?
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Old   June 7, 2013, 06:18
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Have you explored if the flow is steady or transient?

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Old   June 7, 2013, 06:49
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Try coupled solver and reduce all relaxation factors & Courant number until solution converges.
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Old   June 7, 2013, 07:05
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Multphase problems are tricky to model and often transient - especially when Eulerian models are used. Are you running steady or transient?

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Old   June 7, 2013, 11:45
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Im running with steady. I gave heat transfer as well. But could not observe any changes ..
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3 phase flow, 3 phase flow separator, convergence, multiphase

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