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kim tran (kimngoc999)
Member
Username: kimngoc999

Post Number: 9
Registered: 06-2009
Posted on Wednesday, July 22, 2009 - 08:51 am:   

Hi Mr Nelson,

my program is displayed" error: solver failed...It may overdetermined or underdetermine..please contact PDE solution Inc"

What does it means?
How can we fix this problem
application/octet-streamcircle at square corner
circle.pde (3.8 k)
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Robert G. Nelson (rgnelson)
Moderator
Username: rgnelson

Post Number: 1280
Registered: 06-2003
Posted on Wednesday, July 22, 2009 - 02:38 pm:   

If you use only nuf and num in the computation, you can plot nui over the domain.
This shows that nui takes on values from 0 to -8000.
I doubt that these numbers make sense, because the various terms in the equations go through singularities.
You should re-examine your definition of nui.

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