Quote:
Originally Posted by Tesla
For the rules, I was refering more so to the fluid dynamics equations, but those 4 points above do help clear some things up for me,
I think I'm stuck with #4 and trying to see what I can draw from 1,2 &3 to optimize that position.
Thanks.
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The computational fluid dynamics guys are working with the full Navier-Stokes Equation with spherical 3-D coordinate system and utilizing turbulence models and a host of ancillary computer sub-routines.They require a super-computer to model 3-D wake flow which absolutely must be understood.Aircraft don't have wakes per se,so they're a relative breeze to model numerically.
Guys like Hucho would actually put a car in the wind tunnel at Volkswagen and blow smoke all over it to reveal the wake.
Then a 'wake' would be constructed in 3-D,based on the smoke flow,and then be digitally panelized discreetly into the wireframe model of the virtual car for further CFD analysis.
Any iteration of the body would require starting again from scratch! The millions of dollars spent is much cheaper than developing a new powertrain for fuel economy though,so it turns out to be a big bargain.
