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Undefined Variable
Posted Apr 26, 2019, 9:08 p.m. EDT Electromagnetic Heating, Fluid & Heat, General Version 5.3 0 Replies
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Hi
I am trying to model the heat transfer performance of a helix electric heating element in a packed bed with air flowing into the bed. The heating element is inside the packed bed. When I run the model, it tells me that sigma required by current conservation is not defined. However I actually defined that value in the material node. What is the problem?
Another question is that I simulate the packed bed as porous media. I just tick the porous media box in Heat Transfer in Fluids and put some physical properties for the porous media. I also add Solid (that heating element) in Heat Transfer in Fluids node. I wonder if doing like this takes heat conduction between heating element and porous media into consideration.
Please check my file (5.3 version) and thank you very much!
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Hello San Zhang
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