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Level-set VOF results problems

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Old   November 18, 2011, 07:10
Exclamation Level-set VOF results problems
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Nuno Gomes
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Hello!

I am trying to model flow front of a liquid-gas flow. In the case, with a polymer and an air.

To do that i am using VOF model in fluent, who give a pretty good flow front definition, according to the experimental.

I al trying to use level-set, but this seems more instable than VOF.

I am curious, since the couple Level-Set and VOF should give better results, right?
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Old   November 20, 2011, 07:17
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xrs333
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NO, not always.
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Old   November 20, 2011, 08:33
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Quote:
Originally Posted by xrs333 View Post
NO, not always.
Why you said that?
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Old   November 20, 2011, 08:54
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Fluent incorperated level-set into VOF from V13 on, and i believe the programmer had tested the code with a lot of cases, but the real flow is so complex that it is not reasonable you expect to get 'better' results just because of new method is used.
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