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What is wrong in this new Solver

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Old   June 30, 2015, 22:12
Question What is wrong in this new Solver
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Dear interested,

I have added the Dynamic Mesh feature to the compressibleMultiphaseInterDyMFoam solver (OF-2.3.1). It is correctly compiled. However when I run a test case the results show that the fluid cells in the moving zone are not moving!. I have checked the case setup with moveDynamicMesh and everything was well.

Any idea is welcome. The new solver is attached.

Many thanks in advance
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File Type: gz compressibleMultiphaseInterDyMFoam.tar.gz (13.9 KB, 12 views)
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Old   November 12, 2015, 07:24
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Matthias Neben
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Hello anas,

have you solved the problem or got an idea of the solving it?

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Old   March 30, 2018, 06:52
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I compared your solver with compressibleMultiphaseInterFoam for a dam4break case.

You are not getting any liquid movement because your time step gets much smaller when you are refining compared to when you are not. Like 4 orders of magnitude. And it keeps decreasing with time.

The reason I think this happens is because you are getting this warning when you do the checkMesh.
"***Total number of faces on empty patches is not divisible by the number of cells in the mesh. Hence this mesh is not 1D or 2D."

This mesh error might be the thing messing this up, because in general time step should decrease only by a factor of 2 if you are refining for 1 level.

Have you made any progress?

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Old   May 25, 2018, 05:05
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if anybody is still interested I made a compressibleMultiphaseInterDyMFoam solver (linux 4.0 version)

The solver works nicely for me on a dambreak tutorial.

CAUTION: this was done by comparing multpaseInterFoam with multiphaseInterDyMFoam and adding the same things for the compressible version. Those are incompressible solvers and it might be that in compressible flow some additional things need to be added.
Also the solver has not yet been tested, so use at your own risk.

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dynamic mesh, multiphase, new solver

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