Long-duration time-resolved PIV to study unsteady aerodynamics

Zachary J. Taylor, Roi Gurka, Gregory A. Kopp, Alex Liberzon

Research output: Contribution to journalArticlepeer-review

179 Scopus citations

Abstract

A time-resolved particle image velocimetry (PIV) system has been developed at the University of Western Ontario, London, ON, Canada, with long-recording-time capabilities. This system is uniquely suited to the study of unsteady aerodynamics and hydrodynamics, such as avian aerodynamics or bluff-body oscillations. Measurements have been made on an elongated bluff body through the initial build-up phase of flutter. The possibilities to study this instability, which was responsible for the collapse of the Tacoma Narrows Bridge, are significantly broadened by the use of this system. The long-time recording capability of the system allows for novel results since it yields data that are spatially and temporally resolved over a long record length. The buildup of flutter is shown to exhibit complex dynamics that are heavily influenced by the flow-induced motion of the body. Features of the wake turbulence as a function of time are presented and shown to substantially vary.

Original languageEnglish
Article number5464317
Pages (from-to)3262-3269
Number of pages8
JournalIEEE Transactions on Instrumentation and Measurement
Volume59
Issue number12
DOIs
StatePublished - Dec 2010

Funding

FundersFunder number
Ontario Research Foundation
Canada Foundation for Innovation
Canada Research Chairs
Western University

    Keywords

    • Image processing
    • open-source software
    • optical velocity measurement
    • particle image velocimetry (PIV)
    • unsteady aerodynamics and hydrodynamics

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