Passive Control of Vortex Shedding via Screen Shroud

A. M. Azmi, T. Zhou

Research output: Chapter in Book/Conference paperConference paperpeer-review

3 Citations (Scopus)

Abstract

The turbulent wake of screen-shrouded cylinders were experimentally investigated using flow visualization. Screen cylinders made from screen mesh of various porosity (37%, 49%, 61% and 67%) were used as the shrouds. The main purpose of the study is to examine the effect of screen porosity, β and screen diameter ratio, dw /D (wire diameter to cylinder diameter ratio) on the vortex development behind the shrouded cylinders, particularly in supressing the vortex shedding from a circular cylinder. The diameter ratio between the screen shroud and the plain cylinder, D/d was 2.0. The flow Reynolds number based on the shroud diameter, ReD was about 1000. Results showed that the inclusion of the screen shrouds has significant impact on the wake of the circular cylinder. With larger value of the non-dimensional parameter βdw /D, vortex was impaired and the formation length was longer in the shrouded cylinder wake. The vortex generation mechanism was also discussed.

Original languageEnglish
Title of host publicationIOP Conference Series: Materials Science and Engineering
Place of PublicationUK
PublisherIOP Publishing
Volume280
Edition1
DOIs
Publication statusPublished - 20 Dec 2017
Event3rd International Conference on Mechanical Engineering and Automation Science (ICMEAS 2017) - Birmingham, United Kingdom
Duration: 13 Oct 201715 Oct 2017

Publication series

NameIOP Conference Series: Materials Science and Engineering
PublisherIOP Publishing
ISSN (Print)1757-8981

Conference

Conference3rd International Conference on Mechanical Engineering and Automation Science (ICMEAS 2017)
Country/TerritoryUnited Kingdom
CityBirmingham
Period13/10/1715/10/17

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