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Type: Journal article
Title: The interaction of a bluff body with a vortex wake
Author: Leclercq, D.
Doolan, C.
Citation: Journal of Fluids and Structures, 2009; 25(5):867-888
Publisher: Academic Press Ltd
Issue Date: 2009
ISSN: 0889-9746
Statement of
D.J.J. Leclercqa and C.J. Doolan
Abstract: A theoretical, experimental and numerical study is presented of the interaction of a vortex–wake created by an upstream blade with a downstream prismatic block. The aim of the study is to investigate the fundamentals of force and noise generation for this type of flow and explain how inter-object spacing affects the far-field noise level. A theoretical model, based on a compact form of Curle's formulation, is developed and shows that acoustically constructive or destructive interference is determined by the amplitude and phase of the forces on each object. Experimental and two-dimensional, unsteady numerical results of the vortex–wake interaction case are presented for several blade–block separation distances. Using a combination of experimental and numerical data, the theoretical model is able to explain observed variations in far-field noise level with blade–block separation distance. The numerical model accurately predicts the phase relationship between the unsteady forces on each object.
Keywords: Vortex–wake interaction
Curle's formulation
Description: Copyright © 2009 Elsevier B.V. All rights reserved. ScienceDirect® is a registered trademark of Elsevier B.V.
DOI: 10.1016/j.jfluidstructs.2009.02.005
Grant ID: ARC
Description (link):
Appears in Collections:Aurora harvest
Environment Institute publications
Mechanical Engineering publications

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