# How to solve this alpha Eqn using MULES?

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 September 29, 2013, 14:44 How to solve this alpha Eqn using MULES? #1 Member   David Long Join Date: May 2012 Location: Germany Posts: 55 Rep Power: 5 Hi Foamers, I want to modify the interFoam solver where the alpha Eqn is like: Eqn 1: The fluid Cell contains fluid phase 1 and phase 2, along with the solid phase, here \epsilon_f stands for the volume fraction occupied by fluid (V_phase1 + V_phase2). \epsilon_f filed is also defined in createFields.H Code:  volScalarField voidfractionFluid ( IOobject ( "voidfractionFluid", runTime.timeName(), mesh, IOobject::MUST_READ, IOobject::AUTO_WRITE ), mesh ); The original VOF method in interFoam is: Eqn 2: the implementation code of alpha equation: Code: ` for (int aCorr=0; aCorr

 October 11, 2013, 13:36 #2 Senior Member     Santiago Marquez Damian Join Date: Aug 2009 Location: Santa Fe, Santa Fe, Argentina Posts: 418 Rep Power: 15 Hi, I guess it could be done using the source term included in MULES. Regards. __________________ Santiago MÁRQUEZ DAMIÁN, Ph.D. Post-doctoral Fellow Research Center for Computational Mechanics (CIMEC) - CONICET/FICH-UNL T.E.: 54-342-4511594 Ext. 1005 Güemes 3450 - (3000) Santa Fe Santa Fe - Argentina http://www.cimec.org.ar

 October 23, 2013, 04:06 #3 New Member   Mahdi S Join Date: Jul 2012 Posts: 16 Rep Power: 5 Hi Santiago I followed your PhD thesis where you explain how MULE works. Concerning this problem how the source terms should look like? because MULE needs Su and Sp source terms to solve it implicitly or explicitly, but the question is how to derive Su and Sp from this source term on the right hand side.

 July 11, 2015, 05:57 #4 Member   Przemek Join Date: Jun 2011 Posts: 61 Rep Power: 6 Hi Mahdi Try to read this post Implicit solver for gamma volumefraction equation __________________ best regards pblasiak

 Tags alphaeqn, mules, source term

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