LVDH wrote: ↑Thu Apr 22, 2021 4:36 pm

Very interesting to see the comparison of the numbers.

How did you run it Max?

For reference here my numbers are CL=-4.598, CD=1.746

Variante and I chatted a bit about this last week, and I think we have 2 major differences:

1) I used 2 deg rake and he used 1 deg. If I drop my car to 1 deg rake, I get CL=-3.991, CD=1.640.

2) I put the entire body in the high-res folder, he used the normal MVRC mesh assignments. If I move the body out of high-res, I get CL=-4.028, CD=1.750

So adding those 2 changes together brings my numbers down to roughly CL=-3.421, CD=1.644, which is pretty close to what Variante got.

Essentially half of the difference is from rake, and the other half is from the mesh quality. When you look at the vortices along the floor you can understand why having the floor in high-res made such a big difference. Here is the normal floor (left) vs the high-res floor (right)

https://drive.google.com/file/d/1J5B7kK ... sp=sharing