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Errors when compliming equations. Wall heat transfer wall heat transfer must have at least one resistive layer

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Hello,
I am now study to use the Pipe Flow Modulue in Comsol to simulate the cooling effects of pipe.
I followed on good example from Comsol library but confronted a Error when I want to set the at the last step: Study->Show Default Solver. The Error is :

Errors when compiling equations.
Wall heat transfer feature Wall heat Transfer 1 must have at least one resistive layer.

Could anyone give me an idea about how I could fix this error? I have no clues.
I attache the module as well. Thanks a lot!


0 Replies Last Post Sep 7, 2017, 10:10 a.m. EDT
COMSOL Moderator

Hello Sijie Liao

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