I was wondering if anyone had any tips or best-practices for simulating internal recirculating flow with the CFD package. I'm optimizing a simple exchanger + peltier block for my heat transfer class, but no matter how I assign boundrary conditions I can't seem to get my fluid volume to flow.
So far i've tried the following approaches:
Let inventor export directly to CFD. CFD correctly detects and creates the internal surface.
Let inventor export to Fusion, cap all ports, assign mass flow BCs to each capped port with corresponding zero-pressure BCs on the outlet. Although this internal surface is segemented into many pieces instead of just one continous piece like the direct-export approach does.
Both approaches yield the same result wether transient or steady-state so i'm really scratching my head at how to proceed. I've checked the wiki but it doesn't seem to have much reference on how to best set BCs between parts.
I've attached an image of my current mass-flow BCs and the full assembly. This is using the second approach.
Either way, when evaluating the model CFD detects "0 inlets, 0 outlets, 0 unknown"
Solved! Go to Solution.
If you share you support share (.cfz) file the community can review your model.
The basic reason why your model doesn't work is because you have a mass flow rate assigned to a solid wall. If you suppress the mesh for the Nylon parts then you would have seen at least some sort of result.
Having variable material properties for your water is probably not necessary either.
Ah, thank you for the advice, and yes I am trying to emulate a closed system. I've read up on the documentation for the fan, and it looks like I would just designate one of my barbs as the fan/pump during the materials assignement phase?