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Old   July 26, 2010, 03:36
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  #121
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Nima Sam
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hi sasan
im sure the version of openFoam in ur laptop and and where you run in it parallel is different , in new release of openFoam (1.7) , for stability,"p_rgh" is used instead of "p".
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Old   July 26, 2010, 11:36
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Thanks Nima and ngi,

That was helpful.
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Old   April 24, 2011, 16:13
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Hello Hrvoje,

As I said, if there are no topological changes, no field mapping gets done. Instead, the integral equations we are discretising are rewritten for the arbitrary moving control volume instead of the static one. There are two effects:
1) the rate of change of the volume in the ddt term (vol and old vol)
2) the relative velocity in the convection term, equal to the difference between the absolute velocity and the mesh motion velocity - that's the mesh.phi() bit in the solver. Once you do that, the mesh motion effect is actually built into the equation itself and the "mapping" you refer to becomes a part of the solution.


Can you tell me what procedures are doing the steps 1) and 2)?, i mean change at volumen and relative velocity correction??

Advanced thanks,

Pablo
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Old   May 9, 2011, 15:22
Default piso algorithm in interFOAM
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hello friend

why this following expression has been added to piso Algorithm
- (fvc::grad(U) & fvc::grad(muEff))

is it for varying mu ?

beacuse i think the effect of varying mu has been seen in :
- fvm::laplacian(muEff, U)
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Old   May 9, 2011, 15:35
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Santiago Marquez Damian
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This is explained in Edin Berberovic's paper and due viscosity spacial variability and the expansion of (nabla U + nabla U^T) term.

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Old   May 9, 2011, 16:47
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where can i find this paper?
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Old   May 9, 2011, 17:23
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I've sent it to the mail published in your contact info.

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Old   May 25, 2011, 16:30
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So i've been using interFoam for the past week few weeks now and I'm starting to wonder if it's the best solver for what I'm trying to do (vof and mhd together).

It seems like interFoam, rather than taking properties of each fluid separately, takes properties of the mixture into account.

Is there a different solver that would be more suited to solving two separate fluids such as liquid metal and plasma?
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