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How to define isotropic or anisotropic conditions?

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Hi folks.

I was wondering if anyone could shed some light on a doubt that I have.

I'm using the Mixture Model with K-Epsilon turbulence model to simulate a liquid-solid pipe flow.

The first case is homogeneous, latter I'll use heterogeneous conditions.

But for the homogeneous case first:

- I know that using a Wall Function, the anisotropic conditions are covered at the near-wall flow.

- However (and this is probably a very simple question) I can't figure out how to define isotropic or anisotropic
conditions to the rest of the domain (how to say to comsol that I want isotropic diffusion).

- The stabilizations tab shows an "isotropic diffusion" but I am not certain that is the same thing...

Hope I was clear and someone can help.

Cheers!

Rui Silva

0 Replies Last Post Mar 17, 2011, 12:41 p.m. EDT
COMSOL Moderator

Hello Rui Silva

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