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please help. questions about comsol 3.5 with matlab
Posted 13 lug 2011, 03:25 GMT-4 Heat Transfer & Phase Change 0 Replies
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i'm trying to use comsol 3.5 and built a model (1D) about heat transfer, and i wrote some programe in matlab to slove inverse heat transfer problems, aiming to get some optimized parameters. But, i encounter some difficulties and matlab showed errors as follows:
Java exception occurred:
Exception:
com.femlab.jni.FlNativeException: Undefined value found Solvermodel
Messages:
Undefined value found Solvermodel
Stack trace:
at solvermodel.cpp, row 1808, (Undefined value found in the stiffness matrix.
There are 73 equations giving NaN/Inf in the matrix rows for the variable T
at coordinates: (-8), (-7.97084), (-7.94167), (-7.91251), (-7.88335), ...
and similarly for the degrees of freedom, NaN/Inf in the matrix columns
)
at com.femlab.solver.FlSolver.femTime(Native Method)
at com.femlab.solver.FemTime.run(Unknown Source)
at com.femlab.server.FlRunner.run(Unknown Source)
at com.femlab.server.r.run(Unknown Source)
at com.femlab.util.i.run(Unknown Source)
at com.femlab.util.ae.run(Unknown Source)
please help me and very appreciate of you!
Hello wen Bin
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