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The effect of aspect ratio on the wake of the Ahmed body
journal contribution
posted on 2023-05-19, 00:40 authored by James VenningJames Venning, Lo Jacono, D, Burton, D, Thompson, M, Sheridan, JThis paper seeks to further elucidate the wake of the Ahmed body by investigating how the time-averaged flow structures vary with frontal aspect ratio. High-resolution particle image velocimetry results are provided for eight different width Ahmed geometries at ReFA√=3×104. It is shown that the narrower the body, the greater the downwash over the back slant, meaning the flow remains more attached. At a critical aspect ratio (AR=1.9), the flow downstream changes. The separation over the back slant is shown to be affected by the AR, and this in turn has a significant effect on the circulation in the c-pillar vortices.
History
Publication title
Experiments in FluidsVolume
56Issue
6Article number
126Number
126Pagination
1-11ISSN
0723-4864Department/School
Australian Maritime CollegePublisher
Springer New York LLCPlace of publication
USARights statement
Copyright 2015 Springer-Verlag Berlin HeidelbergRepository Status
- Restricted