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注册: 2015-01-26
专业: 传热传质学

[求助] 关于管式反应器的数值积分，是中仿科技上的一个例题，但却出现了一个错误已有1人参与

大神指教
这是关于管式反应器的数值积分，是中仿科技上的一个例题，但却出现了一个错误，导致建模无法进行，细节如下:

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 2 equations giving NaN/Inf in the matrix rows for the variable u1
at coordinates: (0), (1), ...
There are 2 equations giving NaN/Inf in the matrix rows for the variable u2
at coordinates: (0), (1), ...
There are 2 equations giving NaN/Inf in the matrix rows for the variable u3
at coordinates: (0), (1), ...
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.util.i.run(Unknown Source)
at com.femlab.util.ae.run(Unknown Source)

如果能告诉我这个问题，定当重谢

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