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-   -   Level-set VOF results problems (https://www.cfd-online.com/Forums/fluent/94532-level-set-vof-results-problems.html)

Dinocrack November 18, 2011 06:10
Level-set VOF results problems
 
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?

xrs333 November 20, 2011 06:17
NO, not always.

Dinocrack November 20, 2011 07:33
Quote:
Originally Posted by xrs333 (Post 332821)
NO, not always.
Why you said that?

xrs333 November 20, 2011 07:54
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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