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Turbulent kinetic energy budget in the far field of a square cylinder wake

  • S. L. Tang*
  • , N. Lefeuvre
  • , L. Djenidi
  • , R. A. Antonia
  • , Y. Zhou
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen
  • University of Newcastle

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, the transport equation for the turbulent kinetic energy (TKE) is tested in the far field of a square cylinder wake (hereafter denoted SC). It is found that the physical mechanism for transporting TKE along the axis is different from that in a circular cylinder (hereafter denoted CC) wake. For the SC wake, the q2 diffusion term is negligible compared to advection term along the axis and the advection and energy dissipation terms dominate the budget. However, in the CC wake, aside from the advection and energy dissipation terms, the q2 diffusion term also contributes significantly to the budget. At the region close to the centreline, the gain of the energy due to the contributions from the advection and diffusion terms is equal to the loss due to the isotropic dissipation, indicating that the isotropic dissipation rate εiso is a good surrogate of the mean TKE dissipation rate ̄ε.

Original languageEnglish
Title of host publicationFluid-Structure-Sound Interactions and Control - Proceedings of the 3rd Symposium on Fluid-Structure-Sound Interactions and Control
EditorsYu Zhou, A.D. Lucey , Yang Liu, Lixi Huang
PublisherSpringer Heidelberg
Pages169-174
Number of pages6
ISBN (Print)9783662488669
DOIs
StatePublished - 2016
Externally publishedYes
Event3rd Symposium on Fluid-Structure-Sound Interactions and Control,FSSIC 2015 - Perth, Australia
Duration: 5 Jul 20179 Jul 2017

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364

Conference

Conference3rd Symposium on Fluid-Structure-Sound Interactions and Control,FSSIC 2015
Country/TerritoryAustralia
CityPerth
Period5/07/179/07/17

Keywords

  • Far-wake
  • Turbulent kinetic energy budget

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