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Mauro Chierici Lopes (chierici)
Member
Username: chierici

Post Number: 9
Registered: 01-2006
Posted on Wednesday, January 18, 2006 - 09:10 am:   

Hi
I'm trying to calculate a path length using biintegral(1,"path name") in a moving mesh problem. However, although the path shrinks the calculate integral is constant. Can I calculate this in another way?

Thank you.
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Robert G. Nelson (rgnelson)
Moderator
Username: rgnelson

Post Number: 522
Registered: 06-2003
Posted on Wednesday, January 18, 2006 - 05:15 pm:   

The FlexPDE analyzer looks at bintegral(1,"path name") and thinks it is a constant that does not need re-computation. This is a logical oversight in the moving mesh implementation: these integrals should be tagged as needing re-evaluation.

You can fake it by adding a small term that depends on a variable, like bintegral(1+1e-9*xm,"path name"). This will force the integral to be recomputed.

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