PIV measurements of laminar flow around a hemisphere

A. Goharzadeh, L. Khezzar, A. Molki

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

5 Scopus citations

Abstract

This paper presents an experimental study of laminar flow past a smoothed hemisphere using the Particle Image Velocimetry technique. The experimental setup consists of a rectangular channel, through which water flows over a 30-mm diameter hemisphere mounted on a horizontal surface. From the measured velocity distribution around the hemisphere a physical insight into the flow is presented. Vertical and horizontal 2D velocity distributions are obtained for a constant Reynolds number of Re=800, corresponding to a regime of laminar flow. Measurements revealed the three dimensional structure of the flow including a horseshoe vortex surrounding the hemisphere and arch-shaped vortices in the downstream region. Both instantaneous and average velocity distribution were studied. The location of the reattachment point, the separation line, and the reverse flow are identified and discussed.

Original languageBritish English
Title of host publicationAdvances in Fluid Mechanics IX
Pages29-36
Number of pages8
DOIs
StatePublished - 2012
Event9th International Conference on Advances in Fluid Mechanics - Advances in Fluid Mechanics IX, AFM 2012 - Split, Croatia
Duration: 26 Jun 201228 Jun 2012

Publication series

NameWIT Transactions on Engineering Sciences
Volume74
ISSN (Print)1743-3533

Conference

Conference9th International Conference on Advances in Fluid Mechanics - Advances in Fluid Mechanics IX, AFM 2012
Country/TerritoryCroatia
CitySplit
Period26/06/1228/06/12

Keywords

  • Dome
  • Hemisphere
  • Horseshoe vortex
  • PIV

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