An analysis of the unsteady wake behind a circular cylinder using lagrangian coherent structures

Matthew P. Rockwood, Melissa A. Green

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The unsteady wake behind a circular cylinder was experimentally studied and compared with numerical results. The location and evolution of coherent structures, or vortices, in the flow were analyzed to facilitate the understanding of the complex vortex shedding physics in the near wake region. This understanding is critical to the control of vortex shedding from bluff bodies. The two-dimensional velocity data was collected using a 2D DPIV measurement system. The data was phase-averaged using snapshot Proper Orthogonal Decomposition (POD) and pressure measurements from the cylinder surface. The Eulerian Q-criterion was applied along with a Lagrangian coherent structures (LCS) analysis to numerical and experimental data to determine the properties of the wake.

Original languageEnglish (US)
Title of host publication53rd AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103438
DOIs
StatePublished - Jan 1 2015
Event53rd AIAA Aerospace Sciences Meeting, 2015 - Kissimmee, United States
Duration: Jan 5 2015Jan 9 2015

Publication series

Name53rd AIAA Aerospace Sciences Meeting

Other

Other53rd AIAA Aerospace Sciences Meeting, 2015
CountryUnited States
CityKissimmee
Period1/5/151/9/15

ASJC Scopus subject areas

  • Aerospace Engineering

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    Rockwood, M. P., & Green, M. A. (2015). An analysis of the unsteady wake behind a circular cylinder using lagrangian coherent structures. In 53rd AIAA Aerospace Sciences Meeting [AIAA 2015-1536] (53rd AIAA Aerospace Sciences Meeting). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2015-1536