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Joule heating bundary problem
Posted 15.06.2011, 04:33 GMT-4 Heat Transfer & Phase Change, Studies & Solvers Version 4.1 2 Replies
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I am working on a heat transfer problem in a nanostructure that I am investigating currently. It concerns heat transfer from an applied voltage, please see the attached model. When trying to solve however I get the error that there are missing equations, and I suppose this is related to the problem that I am missing some boundary condition, but I con not understand what it is. If anyone can help me point at the error I would very much appreciate it!
Please not that there are several boundary conditions that I have disabled in search for a problem, but with out success.
Best,
Robert Rehammar
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It appears that there is no current source in your model.
Try to set up the electric boundary conditions and run your simulation again.
Mathieu
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Thank you for your suggestion. I added a current source and added all domain with a Q = 0, but this did not make any difference. I do not believe this is the problem, since the missing equations are on a boundary. Further I do not want a current source, I want to apply a voltage later or that will provide the current. Applying a voltage now does not make any difference.
Best,
Robert