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Moving Mesh velocity in tpfmm

Posted 25.01.2016, 00:50 GMT-5 Fluid & Heat, Computational Fluid Dynamics (CFD), Mesh Version 5.2 1 Reply

Carles Safont
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Hi,

I'm wondering how COMSOL calculates the mesh velocity (tpfmm.x_free
) in the tpfmm module, as I define a flux in fluid-fluid interface

I want to know it because the velocity is very slow and need to know how can it improve


Thanks a lot
1 Reply Last Post 18.04.2017, 15:19 GMT-4
COMSOL Moderator

Hello Carles Safont

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Mohammad Amin Kazemi
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Posted: 7 years ago 18.04.2017, 15:19 GMT-4
Carles,

Have you found a solution to your problem of slow mesh moving?

In my model, it is moving very fast though. I assume the mesh velocity should be overridden by something in COMSOL.
(Navier slip condition, wall friction, bad mesh quality near the deformed interface, large time steps, large relative and absolute errors, low element order, not using P2+P1, ... ???).

But I can't figure it out.

Amin,
Carles, Have you found a solution to your problem of slow mesh moving? In my model, it is moving very fast though. I assume the mesh velocity should be overridden by something in COMSOL. (Navier slip condition, wall friction, bad mesh quality near the deformed interface, large time steps, large relative and absolute errors, low element order, not using P2+P1, ... ???). But I can't figure it out. Amin,

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