Hello. I'm relatively new to COMSOL and I've been trying to model a simple counter-flow through concentric double-pipes. Currently, I have the model in a 2-D axisymmetric configuration and three domains: fluid, wall, fluid. I have water in both pipes and copper as the pipe wall. The outer pipe is flowing at a higher temperature than the inner pipe, and both are using water just to keep things simple. The outer pipe is supplied a constant temperature on it's surface.
I just learned that there is a new feature since version 4.3 where a domain is no longer needed to be created to define a thing wall. However, let's say I want to keep the wall. How would I handle the wall? Would I have to select another physics (Heat Transfer in Solids) along with Heat Transfer in Fluids? What options of boundary conditions can I apply to the wall and which physics?
Thank you. I appreciate your help.
I just learned that there is a new feature since version 4.3 where a domain is no longer needed to be created to define a thing wall. However, let's say I want to keep the wall. How would I handle the wall? Would I have to select another physics (Heat Transfer in Solids) along with Heat Transfer in Fluids? What options of boundary conditions can I apply to the wall and which physics?
Thank you. I appreciate your help.