# 3 phase flow convergence problem

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 June 7, 2013, 00:47 Multiphase convergence problem #1 Member   EMAVI V SURYA SAMPATH Join Date: Aug 2011 Location: Malaysia Posts: 83 Rep Power: 5 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

 June 7, 2013, 01:51 #2 Member   Vignesh KPV Join Date: Oct 2011 Location: Bangalore Posts: 72 Rep Power: 5 Hi, Once check all the values that are been defined to boundary conditions.

 June 7, 2013, 05:21 #3 Member   EMAVI V SURYA SAMPATH Join Date: Aug 2011 Location: Malaysia Posts: 83 Rep Power: 5 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 ?

 June 7, 2013, 06:18 #4 Senior Member   OJ Join Date: Apr 2012 Location: United Kindom Posts: 475 Rep Power: 11 Have you explored if the flow is steady or transient? OJ

 June 7, 2013, 06:49 #5 Senior Member     Philipp Join Date: Jun 2011 Location: Germany Posts: 1,097 Rep Power: 16 Try coupled solver and reduce all relaxation factors & Courant number until solution converges. __________________ The skeleton ran out of shampoo in the shower.

 June 7, 2013, 07:05 #6 Senior Member   OJ Join Date: Apr 2012 Location: United Kindom Posts: 475 Rep Power: 11 Multphase problems are tricky to model and often transient - especially when Eulerian models are used. Are you running steady or transient? OJ

 June 7, 2013, 11:45 #7 Member   EMAVI V SURYA SAMPATH Join Date: Aug 2011 Location: Malaysia Posts: 83 Rep Power: 5 Im running with steady. I gave heat transfer as well. But could not observe any changes ..

 Tags 3 phase flow, 3 phase flow separator, convergence, multiphase

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