Hi all,
I was trying to do the shell and tube heat exchanger simulation using solidoworks, here the tube side of the heat exchanger is not a plain tube, its a helically corrugated tube instead. I followed the similar procedure of the tutorial given in the solidoworks flow simulation, but seems there is something wrong and I couldn't figure it out. but the results are very unlikely, for example the density of the gas which is flowing in the corrugated tube is some where around 900kg/m^3. when I have done the plain tube and shell heat exchanger the results were close to the results of the experimental setup.
The fluid flowing inside the tube is air with the inlet mass flowrate of 0.05kg/s at 700K, the fluid inside the shell is water and is flowing at 0.1kg/s at 300K. The default fluid that I selected for the project is water and hence I defined the fluid subdomain inside the corrugated tube as air and assigned the inlet boundary conditions to it. The outlets of the both air air and water are set to be at environmental pressure and temperature since they are unknowns.
please find the attached heat exchanger file in this discussion.
Hi Vamsi, just running the model now.
Can you elaborate on what the results should be? Can you share the model with the straight tube and point out the differences between the 2 models? (both setup and results)
A few comments on the setup that I can see:
1. adiabatic wall, is it really 100% adiabatic on the outside? perfectly insulated?
2. i prefer to make lids myself rather than using the lid tool. this makes sure that any interferences that are found are ones that i want to eliminate. i haven't had a chance to fully check your model for interferences..etc.
3. i don't think you need to have the initial parameter velocity in the X direction. you can use that to speed along steady state solutions but this one should solve pretty quick.
4. you can remove air from the default fluid definition. because from what i can see you want to have nitrogen in the center and water on the outside. (setup looks ok)