Hello everyone, this is my first post here. Glad to meet you all.
I’m Jaime, I’m 23 years old. I’m a mechanical engineer.
3 months ago I discovered this fantastic software, and as I am a motorsport aerodynamics fan I started my journey to learn how to use a CFD software properly.
I have created a rough design of a CAR with CATIA v5 to try to simulate the effects of MRF zones (wheels) and the porous media by my own, with no step by step videos (I’ve watched the FSAE tutorials and videos to get on with the software).
Now, without wasting more your time, let me explain my problem:
My problem is regarding the geometry preparation.
I use CATIA, and this is how my Product looks like (Product=Assembly). Each Part is a solid e.g the body, wheels…
What I do is I generate a 1 single solid from all the objects that I want them to behave as a future face in Simscale navigator geometry tree.
In CATIA, I use the boolean operation of Join, then I save this all join, e.g. body with rear wing, diffuser… as STL. (Having 1 solid containing the body, rear wing, sidepod. Then another 1 body for each wheel…)
The workflow idea is: When I have all the bodies joined as a single 1 in CATIA, I save each general body joined in CATIA as STL files.
Therefore, my last step should be to merge all the STL as 1 STL body and below having the surface (being each surface a body from CATIA, right?). For this what I use is the Merge PowerShell script used in FSAE tutorials.
From my understanding, the body and the wheels now should look as faces inside the body merged by the script once I upload it to Simscale, like for example Yosuke’s project.
But instead of that, what I got is this:
I’m very frustrated because I don’t know what to do to solve it because with this CAD representation is really difficult to generate a proper mesh and evermore run a simulation.
All the bodies are assembled together and saved as STL as I mentioned, and joined correctly…
I beg for your help…
Thanks a lot, we keep in touch,