[M_a_t_t]

Originally Posted by JulianEdgar

The aerofoil guide plates I made for the Insight's A pillars helped considerably in reducing the upward motion of the tufts on the side glass behind the pillars, so presumably reduced vortex formation from this source.

I tried corrugated egg cartons stuck vertically in front of the separation point on the side of the Insight ie designed to give more progressive separation and so reduce the pressure change. They didn't seem to work.



I don't know. But even when you can 'see' vehicle vortices (revealed by smoke, leaves, etc) they don't look anything like the idealised versions in the textbooks. I have a strong suspicion that much less is understood about these vortices than is often suggested. For example, I ran a large open mesh grid behind a car, the grid covered in tufts. The tufts revealed nothing.

Are you referring to this testing?



I'm having a hard time visualizing how you would've had the setup with the egg carton. Do you have a picture?

Interesting. Especially with the mesh.