Quote:
Originally Posted by Engeu1
See figure 12 in
2012 Khalighi et al. Unsteady Aerodynamic Flow Investigation Around a Simplified Square-Back Road Vehicle With Drag Reduction Devices J. Fluids Eng. Jun 2012, 134(6)
for a very good approximation of a rectangular body induced vortex ring.
In any case, to some degree a rear tail could transition the flow away from rectangular -some tails are well radiused.
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Wish we had those in the United States. We don't have any. General Motors had one, pre- 1988, however it never made it into commercial production.
