I'm new to COMSOL. I'm using 5.3a. I was trying to replicate the case presented in https://www.comsol.com/video/modeling-the-thermal-management-of-electronic-devices-in-comsol-aug-9-2018, a forced convection across circuit boards. I selected Heat Transfer\Electromagnetic Heating\Joule Heating and Fluid Flow\Nonisothermal Flow\Laminar Flow as my physics, Stationary as my study. Different from in the video, where Solid 1 & Fluid 1 are both under Heater Transfer tree node in the Model Builder area, in my version, there are seperate Heater Transfer in Fluids and Heater Transfer in Solids 2 tree nodes (pls see attached mph file). This bring a problem when I apply periodic Condition (left edge and right edge of the geometry have the same temperature): I can't apply this periodic condition since solid and fluid domains are in two different tree node. I'm not sure if it's because the COMSOL version in the video is different from mine, or I may choose the wrong physics. Anybody can help?
↧