Base pressure coefficients for flows around rectangular plates

K. Hourigan, R. Mills, M. C. Thompson, J. Sheridan, P. Dilin, M. C. Welsh

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The flow around long rectangular plates can be modified by acoustic forcing. The leading-edge vortex shedding is locked to the sound frequency over a broad range of flow velocities. Close to a critical acoustic Strouhal number, significant drops in the mean base pressure coefficient may occur, depending on the plate chord. It is hypothesised that the plate chord changes the position in the acoustic phase at which the leading-edge vortices arrive at the trailing edge. Interference with the trailing-edge vortex shedding may then be responsible for the significant variation in mean base pressure coefficient. This situation is not observed for flows around plates with no leading-edge shedding.

Original languageEnglish
Pages (from-to)311-318
Number of pages8
JournalJournal of Wind Engineering and Industrial Aerodynamics
Volume49
Issue number1-3
DOIs
Publication statusPublished - 1 Jan 1993

Cite this

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title = "Base pressure coefficients for flows around rectangular plates",
abstract = "The flow around long rectangular plates can be modified by acoustic forcing. The leading-edge vortex shedding is locked to the sound frequency over a broad range of flow velocities. Close to a critical acoustic Strouhal number, significant drops in the mean base pressure coefficient may occur, depending on the plate chord. It is hypothesised that the plate chord changes the position in the acoustic phase at which the leading-edge vortices arrive at the trailing edge. Interference with the trailing-edge vortex shedding may then be responsible for the significant variation in mean base pressure coefficient. This situation is not observed for flows around plates with no leading-edge shedding.",
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Base pressure coefficients for flows around rectangular plates. / Hourigan, K.; Mills, R.; Thompson, M. C.; Sheridan, J.; Dilin, P.; Welsh, M. C.

In: Journal of Wind Engineering and Industrial Aerodynamics, Vol. 49, No. 1-3, 01.01.1993, p. 311-318.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Base pressure coefficients for flows around rectangular plates

AU - Hourigan, K.

AU - Mills, R.

AU - Thompson, M. C.

AU - Sheridan, J.

AU - Dilin, P.

AU - Welsh, M. C.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - The flow around long rectangular plates can be modified by acoustic forcing. The leading-edge vortex shedding is locked to the sound frequency over a broad range of flow velocities. Close to a critical acoustic Strouhal number, significant drops in the mean base pressure coefficient may occur, depending on the plate chord. It is hypothesised that the plate chord changes the position in the acoustic phase at which the leading-edge vortices arrive at the trailing edge. Interference with the trailing-edge vortex shedding may then be responsible for the significant variation in mean base pressure coefficient. This situation is not observed for flows around plates with no leading-edge shedding.

AB - The flow around long rectangular plates can be modified by acoustic forcing. The leading-edge vortex shedding is locked to the sound frequency over a broad range of flow velocities. Close to a critical acoustic Strouhal number, significant drops in the mean base pressure coefficient may occur, depending on the plate chord. It is hypothesised that the plate chord changes the position in the acoustic phase at which the leading-edge vortices arrive at the trailing edge. Interference with the trailing-edge vortex shedding may then be responsible for the significant variation in mean base pressure coefficient. This situation is not observed for flows around plates with no leading-edge shedding.

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U2 - 10.1016/0167-6105(93)90026-K

DO - 10.1016/0167-6105(93)90026-K

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EP - 318

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