Solver: 4 Phases of which are 2 miscible

Stefanie.S.W. · March 7, 2019, 04:00

Hello everyone,

I am looking for a multi-phase solver which can compute with 4 phases of which 2 are (completely) miscible. Also my phases are incompressible, I use an atmospheric outlet and a standard inlet and I do not have heat transfer.

I am using OF V.6 and I tried interMixingFoam and multiphaseEulerFoam so far.
InterMixingFoam runs super stable, but can not compute a 4th phase. I tried out to add a 4th phase, but it ignored it and only used alpha 1-3.

multiphaseEulerFoam is hard to run and also I can not control the mixing properly. Also I am not convinced that I need an Eulerian approach.

Any other (standard) solver does not seem to fit: https://cfd.direct/openfoam/user-gui...ndard-solvers/

Do you have any suggestions for me which solver I can use? Is there a variation of interMixingFoam? Do you have any other idea?

Thank you for your help!

mAlletto · March 8, 2019, 06:13

Tiere are solvers for n inmisible phases. Maybe you can modify a solver to achieve what you want. See this page https://www.openfoam.com/documentati...rd-solvers.php for a list oft available solvers

Stefanie.S.W. · March 11, 2019, 08:58

Thank you for the extended list!
I do not feel comfortable with changing a solver.
I decided to use multiphaseEulerFoam. Running it in PISO mode instead of PIMPLE mode helped a lot.

March 7, 2019, 04:00	Solver: 4 Phases of which are 2 miscible	#1
Stefanie.S.W. Member Stefanie Wolf Join Date: Nov 2018 Location: Aachen Posts: 32 Rep Power: 7	Hello everyone, I am looking for a multi-phase solver which can compute with 4 phases of which 2 are (completely) miscible. Also my phases are incompressible, I use an atmospheric outlet and a standard inlet and I do not have heat transfer. I am using OF V.6 and I tried interMixingFoam and multiphaseEulerFoam so far. InterMixingFoam runs super stable, but can not compute a 4th phase. I tried out to add a 4th phase, but it ignored it and only used alpha 1-3. multiphaseEulerFoam is hard to run and also I can not control the mixing properly. Also I am not convinced that I need an Eulerian approach. Any other (standard) solver does not seem to fit: https://cfd.direct/openfoam/user-gui...ndard-solvers/ Do you have any suggestions for me which solver I can use? Is there a variation of interMixingFoam? Do you have any other idea? Thank you for your help!

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March 8, 2019, 06:13		#2
mAlletto Senior Member Michael Alletto Join Date: Jun 2018 Location: Bremen Posts: 615 Rep Power: 15	Tiere are solvers for n inmisible phases. Maybe you can modify a solver to achieve what you want. See this page https://www.openfoam.com/documentati...rd-solvers.php for a list oft available solvers

March 11, 2019, 08:58		#3
Stefanie.S.W. Member Stefanie Wolf Join Date: Nov 2018 Location: Aachen Posts: 32 Rep Power: 7	Thank you for the extended list! I do not feel comfortable with changing a solver. I decided to use multiphaseEulerFoam. Running it in PISO mode instead of PIMPLE mode helped a lot.