I am trying to clean the CAD of our Sidebox of our Formula Student Racecar to do a simulation with a Simscale CFD Incompressible turbulent workbench. Main reason for this simulation is the conflict between the heat-exchange and the aerodynamics. The heat-exchange group says that they might lose to much pressure and have issues with sidewings blocking the sidebox flow. The aerodynamics people say, that they need to stick the sidewings onto the monocoque to have enough stability. Therefore I try to simulate this problem, once without and one time with flaps in the side box. During cleaning and reducing complexity to get a CAD for simulating the problem with Simscale I was confronted to 2 problems:
If I wanna say I have an open flow around the whole assembly I need to have one Inlet assigned but I also need another one for the side box respectively. I never had two Inlets yet. Is that possible to do in Simscale by just assigning the Inlet of the Sidebox as Inlet 2? (same for the outlet) and the inlet of the big fluid as Inlet 1? Can I still go with Incompressible flow or do I need to get a scalar mixing simulation?
Self-Intersection: The sidewings will be crossing the Sidebox in the second problem to look at (see picture). What can I do to simulate the problem without having the self-intersecting problem. Anyone got an idea? We want to import STL ASCII if possible.
Thanks in advance. I will post the link of the project as soon as I finished CAD optimizing and import the CAD to Simscale.