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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Gear Pump Modeling

Posted 2012年3月21日 GMT-4 11:41 Fluid & Heat, Computational Fluid Dynamics (CFD), Structural Mechanics Version 4.2a 5 Replies

Andreas Schwarz
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I am looking for anyone to share their experiences in modeling a gear pump in COMSOL. I am looking for feedback on modules that were used, setup of problem incl. boundary conditions, as well as solver configurations.

Thank you in advance,
Andreas.
5 Replies Last Post 2012年3月22日 GMT-4 13:25
Jaap Verheggen
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Posted: 1 decade ago 2012年3月22日 GMT-4 07:06
You would probably only need the general comsol license, CFD not yet required I think.

An FSI study should be possible, have a look at the peristaltic pump example somewhere on the comsol website.

Start in 2D because when you switch to 3D the computation time will go through the roof.
Get a good PC, 64-bit, >8GB ram.

You would probably only need the general comsol license, CFD not yet required I think. An FSI study should be possible, have a look at the peristaltic pump example somewhere on the comsol website. Start in 2D because when you switch to 3D the computation time will go through the roof. Get a good PC, 64-bit, >8GB ram.
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 2012年3月22日 GMT-4 09:45
The basic COMSOL Multiphysics module has only laminar flow and does not have the FSI interface. Both come with the CFD module. You may not need the FSI interface since the gears in a gear pump are nearly rigid so you can model them as a moving (rotating) mesh instead of a solid.

Nagi Elabbasi
Veryst Engineering
The basic COMSOL Multiphysics module has only laminar flow and does not have the FSI interface. Both come with the CFD module. You may not need the FSI interface since the gears in a gear pump are nearly rigid so you can model them as a moving (rotating) mesh instead of a solid. Nagi Elabbasi Veryst Engineering
Jaap Verheggen
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Posted: 1 decade ago 2012年3月22日 GMT-4 11:21
You'll need the FSI yes, I thought it was with the main license. I have the MEMS license which includes the FSI.

You'll need the FSI yes, I thought it was with the main license. I have the MEMS license which includes the FSI.
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 2012年3月22日 GMT-4 11:46
Thanks Jaap. What I said was not all correct. The FSI interface comes with both the MEMS and the Structures modules (not with the CFD module). Turbulent flow comes only with the CFD module. You can see the detailed specs here: www.comsol.com/products/specifications/. I still think that if you only use the moving mesh with laminar flow you should be able to analyze this problem with only the basic module.

Nagi Elabbasi
Veryst Engineering
Thanks Jaap. What I said was not all correct. The FSI interface comes with both the MEMS and the Structures modules (not with the CFD module). Turbulent flow comes only with the CFD module. You can see the detailed specs here: http://www.comsol.com/products/specifications/. I still think that if you only use the moving mesh with laminar flow you should be able to analyze this problem with only the basic module. Nagi Elabbasi Veryst Engineering
Andreas Schwarz
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Posted: 1 decade ago 2012年3月22日 GMT-4 13:25
I am baffled. There were three replies to this thread? How and why did they get deleted?
I am baffled. There were three replies to this thread? How and why did they get deleted?

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