On the influence of ground movement and wheel rotation in tests on modern car shapes.

Author(s)
Hackett, J.E. Baker, J.B. Williams, J.E. & Wallis, S.B.
Year
Abstract

Wind tunnel force- balance and wake- traverse tests were carried out on 0.154- scale model cars with various degrees of streamlining to determine the significance of ground treat- ment for increasing levels of aerodynamic cleanness. The wake- traverse analysis included investigations of spanwise distributions of vortex and viscous drag. Measurements for a configuration with rolling wheels showed further reductions in wake width, relative to a comparable stationary, flat- bottom- wheels case tested over moving ground. This effect was less significant than the effect of ground motion itself.

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Publication

Library number
B 28445 (In: B 28442) /91 / IRRD 819826
Source

In: Automotive Aerodynamics: An update. Proceedings of the International Congress and Exposition Detroit, Michigan, February 23- 27, 1987, p.37- 65, 14 ref. SAE Paper No. 870245.

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