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RF heating combined with ODE
Posted 25 ago 2014, 05:36 GMT-4 Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.3 0 Replies
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I am only the beginner to develop model using COMSOL.
I have tried to add global equation in microwave heating module (Model: microwave_oven in RF and microwave engineering model library). But I keep failing to develop the model.
In global equation, I typed as following:
N=-Ke*N0 (The original equation is the first order reaction kinetic dN/dt=-kt).
Initial value(u_0) was 0, and initial value (u_to) was 10E8
And I defined Ke as variables like Ke=12/(X_1*10^((Tref-intop1(T))/TH)).
Intop1 is integration of domain for potato (Domain 3).
However, whenever my model was computed, the error message (FAILED TO EVALUATE VARIABLE JACOBIAN, Variable) was popped up.
How can I solve this problem?
If you know, could you share your solution to figure out this problem?
Thank you.
Hello Seung Hyun Lee
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