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Identification of Flow Structures during Irregular Vortex Shedding

Martinuzzi, R.J. and Haidn, O.J. and Bailey, S.C.C. and Hangan, H.M. and Kopp, G.A. (1999) Identification of Flow Structures during Irregular Vortex Shedding. In: 13th ASCE Engineering Mechanics Conference. 13th ASCE Engineering Mechanics Conference, Baltimore MD, USA, June 13-16, 1999.

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Abstract

Surface pressure on a square cylinder mounted near a wall and velocity measurements in the wake are analyzed for a flow at a Reynolds number of 20000. Regular and intermittent vortex shedding regimes are consifered using classical spectral and continuous wavelet transform analysis. For large cylinder-to-wall spacing vortex shedding is regular and there is evidence of secondary large scale structures in addition to the shed vortices. In the intermittent regime, the secondary structures contain significantly less energy. During the interruption of shedding, large-scale, high energy structures can be identified.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Identification of Flow Structures during Irregular Vortex Shedding
Authors:
AuthorsInstitution or Email of Authors
Martinuzzi, R.J.The University of Western Ontario
Haidn, O.J.UNSPECIFIED
Bailey, S.C.C.The University of Western Ontario
Hangan, H.M.The University of Western Ontario
Kopp, G.A.The University of Western Ontario
Date:1999
Journal or Publication Title:13th ASCE Engineering Mechanics Conference
Status:Published
Event Title:13th ASCE Engineering Mechanics Conference, Baltimore MD, USA, June 13-16, 1999
Organizer:The Johns Hopkins University
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):E -- no assignement
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion
Deposited By: Monika Lohmiller
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 13:42

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