Browse Publications Technical Papers 2001-01-1040
2001-03-05

Time Averaged and Unsteady Near-Wake Analysis of Cars 2001-01-1040

From an experimental investigation of a notchback car near-wake, a new topological structure for the wake is proposed. Although experiments were only conducted on notchback vehicles, the topology can be related to other car shapes. The unsteady behavior of the near-wake was investigated. The near-wake frequencies, which can affect ride and steering comfort, were found to be 0.11U∞/xR and 0.42U∞/xR (xR - reattachment length). The lower frequency appears to be a result of large scale vortex shedding (‘hairpin’ vortex) behind the backlight/rear-window. The higher frequency can be attributed to the shear-layer vortices.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Assessing the Effects of Shear and Turbulence During the Dynamic Testing of the Crosswind Sensitivity of Road Vehicles

970135

View Details

TECHNICAL PAPER

An Improved Wind Tunnel Configuration for the Investigation of Aerodynamic Cross Wind Gust Response

1999-01-0808

View Details

TECHNICAL PAPER

The Ahmed Model Unsteady Wake: Experimental and Computational Analyses

2003-01-1315

View Details

X