Flow Mapping of a Jet in Crossflow with Stereoscopic PIV

Knud Erik Meyer, Oktay Özcan, C. H. Westergaard

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Stereoscopic Particle Image Velocimetry (PIV) has been used to make a three-dimensional flow mapping of a jet in crossflow. The Reynolds number based on the free stream velocity and the jet diameter was nominally 2400. A jet-to-crossflow velocity ratio of 3.3 was used. Details of the formation of the counter rotating vortex pair found behind the jet are shown. The vortex pair results in two regions with strong reversed velocities behind the jet trajectory. Regions of high turbulent kinetic energy are identified. The signature of the unsteady shear layer vortices is found in the mean vorticity field.
Original languageEnglish
JournalJournal of Visualization
Volume5
Issue number3
Pages (from-to)225-231
ISSN1343-8875
DOIs
Publication statusPublished - 2002

Keywords

  • jet in crossflow
  • stereoscopic PIV
  • flow mapping

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