Time averaged and unsteady near-wake analysis of cars

Brendan R. Gilhome, Jeffrey W. Saunders, John Sheridan

Research output: Contribution to conferencePaperpeer-review

22 Citations (Scopus)

Abstract

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.

Original languageEnglish
DOIs
Publication statusPublished - 1 Dec 2001
EventSAE World Congress 2001 - Detroit, United States of America
Duration: 5 Mar 20018 Mar 2001

Conference

ConferenceSAE World Congress 2001
Abbreviated titleSAE 2001
CountryUnited States of America
CityDetroit
Period5/03/018/03/01

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