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Heat Transfer in Pipe Flow
Posted 2020/05/04 5:53 GMT-4 Fluid & Heat, Computational Fluid Dynamics (CFD), Heat Transfer 1 Reply
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Hi all!
COMSOL newbie here haha. I am trying to model the flow of compressed hydrogen through a cold pipe, and essentially, I want to see how much the temperature of the hydrogen will cool down as it flows through the pipe in steady state conditions.
The pipe is Copper and is at 77 K, whilst the hydrogen (700 bar so density is at 42 kg) is at 233 K and entering at a flow rate of 0.06 kg/s. I am using the turbulent k-eps conjugate heat transfer flow module but I am not sure why it is not working. When I run the model, tThe temperature of the entire system (fluid and solid domain) just stay constant at 233 K....
I have defined an inflow, outflow and initial values 2 (233 K for fluid, whilst Initial values 1 is 77 K for Copper pipe). have also defined inlet and outlet. My boundary conditions are shown in the image attached.
Does anyone know what could be wrong? :(
Cheers, James
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Hello, I would upload your model so others could look at the set up.