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Old   January 27, 2009, 04:31
Default Hi All I am involved at a r
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Chris Meyer
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Hi All

I am involved at a research group that would like to simulate an impeller working at the surface between two fluids (air and water for a start). This is a mixing vessel application.

Is there a standard OpenFOAM solver that makes use of a VOF formulation with interface capturing, allows for rotating meshes and makes use of a RANS turbulence model? k-omega preferred. Explicit temporal discretization will also be needed.

Apologies if this is a question with an obvious answer, from the lists of solvers I cannot quite determine if the above combination exists.
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Old   January 27, 2009, 05:29
Default No, it doesn't exist. It ought
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Gavin Tabor
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No, it doesn't exist. It ought to be possible to combine elements of rasInterFoam and turbDyMFoam to do this, but I suspect it might be quite tricky!

Gavin
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Old   January 27, 2009, 07:34
Default Hi Chris, I recently set up
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Greg Collecutt
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Hi Chris,

I recently set up a model of a mixer with a partially immersed impellor. I had to get the 1.5-dev version and recompile as the rotating mesh with ggi interface is quite broke in the standard 1.5 release. The solver I used was interDyMFoam (Gavin - the solver for this problem does already exist - it was that that the correct mesh topology library was missing).

I only used the k-epsilon turbulence model but it appeared to work ok. Not sure about some of the standing wave formations that form on the rotating mesh part - I want to run some 'basic physics' tests of my own before I put my name behind the results.

Anyway, I can post my model and a description of how to run it tomorrow if you want.

Greg.
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Old   January 27, 2009, 07:53
Default Thanks Greg - thats quite inte
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Gavin Tabor
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Thanks Greg - thats quite interesting as I may need to use something like that myself!!

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Old   January 27, 2009, 07:57
Default Greg So this is possible an
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Chris Meyer
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Greg

So this is possible and I can live with k-epsilon if I need to.

The sad part here is that I know NOTHING of OpenFOAM and need to install it first and get started. It is however important for me to know that this is possible before I commit to spending the time to get into things.

I would appreciate it tremendously if you could post the info for me, although it might be a while before I get to actually use it. In fact, it seems that the problem has shifted from just a mixing vessel to something more like a flow-through system, i.e. inlet and outlet regions will need to be included as well.

By the way, will this run in parallel?

Another question: do I need to go for OpenFOAM training or would I get along by just following tutorials and, in the event of crisis, cry like a baby until somebody on the forum pities me and helps me (or helps just so that I can stop irritating them).

Chris
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