Abo Bibliothek: Guest
Sixth International Symposium on Turbulence and Shear Flow Phenomena
June, 22-24, 2009 , Seoul National University, Seoul, Korea

DOI: 10.1615/TSFP6

ASYMMETRIES IN THE WAKE STRUCTURE OF A FORMULA 1 TIRE

pages 523-528
DOI: 10.1615/TSFP6.830
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ABSTRAKT

The flow field around a 60% scale stationary and rotating Formula 1 tire was examined both experimentally and computationally in order to investigate the complex near wake flow field. The results of steady RANS simulations were compared to PIV data at two cross flow planes downstream of the tire in order to validate the numerical predictions and to confirm the existence of large scale flow features. Four different tire configurations were tested in order to understand how the wake structure was influenced by various geometrical features. The protruding upper main rotor duct, lower fin caliper duct, wheel camber angle, outboard hub cavity, and airflow through the hub all create asymmetries in the wake of the tire. It is shown that out of all the aforementioned geometrical features, the most critical is the flow through the hub. Simplifying the computational mesh by removing inner brake components (caliper, covers, bearings, rotor, electronics) changes the net positive mass flow through the outboard spokes, and consequently changes the intensity and location of the two main counterrotating vortices in the far wake region.

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