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A Look at the Turbulent Wake Using Scale-By-Scale Energy Budgets Read chapter Read first chapter

2014 | OriginalPaper | Chapter

Intermittency of Vortex Shedding in the Near Wake of a Finite-Length Square Prism

Authors : H. Wang, M. Xu

Published in: Fluid-Structure-Sound Interactions and Control

Publisher: Springer Berlin Heidelberg

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Abstract

The flow around a finite-length square prism with aspect ratio of 5 is investigated using LES at Re d  = 3,900. Two typical flow modes are found in its near wake. One is characterized by staggered arranged spanwise vortices, similar to that in 2D cylinder wake; on the other hand, the spanwise vortices are symmetrically arranged for the second mode. These two modes occur intermittently in the near wake. When the first mode occurs, the pressure on prism side surface fluctuates periodically, corresponding to large values of drag and fluctuating lift; for the second mode, there is no obvious pressure fluctuation, and the drag and fluctuation lift are significantly smaller than those for the first mode.

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Literature
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Metadata
Title
Intermittency of Vortex Shedding in the Near Wake of a Finite-Length Square Prism
Authors
H. Wang
M. Xu
Copyright Year
2014
Publisher
Springer Berlin Heidelberg
Book
Fluid-Structure-Sound Interactions and Control

Print ISBN: 978-3-642-40370-5

Electronic ISBN: 978-3-642-40371-2

Copyright Year: 2014

DOI
https://doi.org/10.1007/978-3-642-40371-2_25

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