by Bob Cramblitt Small things often sell cars and create brand
loyalty: the positioning of the cup holder; how the seat molds
to your body; the thunk of the door when it closes. Add to that
list how particles – whether they are rain, snow or dirt –
disperse across the surface of a car. Particle behavior in
relation to the surface of a car is known in the automotive
industry as vehicle soiling, and up until recently, it was
nearly impossible to simulate in a computer. But within the last
few years, Audi has made major strides in using CFD simulation
and visualization to better predict the complex interactions
that constitute vehicle soiling.