It's been done.
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When I drove a "new beetle" which is about as close as you can get to the template on a street driven car, that thing generated lift and had horrible cD.
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That's because it isn't. At least the first generation. The styling trope can be traced back to the Audi Avus or Quattro, the stylistically arched daylight opening. It made production as the Audi TT. Spoilers save TT owner's lives.
To follow The Template, max camber needs to be at 30% of the length.
Thanks OP, I hadn't seen this one before:
What do you make of the internal dotted lines? They seem to imply that pressure differentials transmit through a solid body. ???
I'm patiently waiting for the inexorable:
duckduckgo.com/?q=CFD Open+VDB and Blender. The best link appears to be:
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Fluid Simulation with Blender - FetchCFD
Search domain http://www.fetchcfd.com/view-project...n-with-Blender
Blender's physics fluid simulator uses the Lattice Boltzmann methods to simulate the fluids and allows easy adjustment of resolution. Blender source file also attached. THIS WORK CAN BE REUSED UNDER THE CC BY LICENSE.
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https://www.fetchcfd.com/view-project/192
This will bring it down from supercomputer level to the hobbyist. You don't even need to have a garage full of 2nd hand game consoles Beowolfed into a render farm.