[kach22i]

I'm looking for a GIF or CFD still of the pressure and air flow of a car tire in a wheel well.

All I found is some related stuff so far.

AERODYNAMICS OF A SOAP BOX WHEEL
Aerodynamics of a Soap Box Wheel

The aerodynamic behavior of a derby wheel is important because four wheels rotating at high angular and linear velocities disturb a lot of air. The amount of energy required to move anything through air increases in value by the third power of the velocity of the object. (Not to be confused with the increase in drag - Drag increases with the square of the speed.)

Yokohama Puts Spoilers on Tire Sidewalls for Better Aerodynamics
Yokohama Puts Spoilers on Tire Sidewalls for Better Aerodynamics


EDIT-1:
Some very nice cartoon-like graphics in this link below, the side view mirror one is awesome.

http://www.buildyourownracecar.com/r...cs-and-design/

EDIT-2
http://pulpaddict.com/tag/lap/

The image on the left, taken from Jacques Heyder-Bruckner‘s PhD research on wing-wheel interaction, vividly illustrates how the time-averaged image (top) smears away much of the structure associated with the breakdown of a front-wing endplate vortex (bottom).

Source of the above:

The aerodynamics of an inverted wing and a rotating wheel in ground effect
http://eprints.soton.ac.uk/207263/

You can download the doctoral PDF from the link above. It's open-air with wing stuff, not enclosed wheel stuff.

page 33

1.2.2 Wheel Aerodynamics
A wheel is a bluff body and as mentioned above, 40% of a Formula One car's drag is
produced by its wheels. The ow behind bluff bodies is known to be unsteady and to
exhibit strong three-dimensional properties [19]. Racing car wheels have the added com-
plexity of rotation, which makes experimental measurements that much more dicult.
Also, the wheels deform considerably under load, their temperature changes and this
would a ect the ow around it. The experimental and computational studies of the ow
around an isolated wheel are reviewed below and it can be noted that there has been an
increase in the research of wheel aerodynamics in recent years

Go to the source to read it, a bunch of missing letters when doing a Copy&Paste.