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Summary: Velocity Field Measurements in a
Pickup Truck Model
Abdullah M. Al-Garni and Luis P. Bernal
Department of Aerospace Engineering
University of Michigan
Ann Arbor, MI 48109-2140
Prepared for:
Larry Butz and Bahram Khalighi
GM Research and Development Center
Warren, MI 48090-9055
Report Number - N002139-03
28 May 2003
University of Michigan Aerospace Engineering Report # N002139-03ii
SUMMARY
The results of Particle Image Velocimetry (PIV) measurements of the flow over a pickup truck are
presented. The main objectives of the study are to gain a better understanding of the flow structure in
near wake region, and to obtain a detailed quantitative data set for validation of numerical simulations of
this flow. Experiments were conducted at moderate Reynolds numbers (~3×105
) in the open return tunnel
at the University of Michigan. The velocity field in six planes has been measured, and a sufficient large
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