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Modeling swelling using Eqauation based Weak Formulation
Posted Jan 6, 2014, 7:56 a.m. EST Materials Version 4.3a 1 Reply
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Hello. I am new in Comsol for my thesis I was working on a model of swelling and frictional phenomenon. I stuck in Comsol. Following are my equations in weak form:
-S*(test(ux)+test(uy)+test(uz))
(Jac-(1/J0)-ohm*c)*test(p)
cdot*(test(C))-hf*(test(Cx)+test(Cy)+test(Cz))-q*(test(C))
(mu-muext)*test(cb)
I got following error.
Test function column Jacobian cannot be evaluated. weak function must be linear in the test functions
Kindly suggest.
Regards,
Mujtaba
Hello Mujtaba Ahmed
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and I'm struggling with the exact same thing with you
did you have any progress?
I want to know how you set the variable S, Jac, hf.
Thanks,
Regards,
Kang