An experimental study on the near flow field characteristics of non-circular jets

YÜKSELENTÜRK Y., Erdem D.

7th International Conference on Experimental Fluid Mechanics (EFM), Hradec-Kralove, Czech Republic, 20 - 23 November 2012, vol.45 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 45
  • Doi Number: 10.1051/epjconf/20134501026
  • City: Hradec-Kralove
  • Country: Czech Republic
  • Istanbul Technical University Affiliated: Yes

Abstract

Subsonic turbulent free jet, issuing from a lobed contoured nozzle in to quiescent air is investigated experimentally. Results are compared with a circular jet from a nozzle of the same exit area and same contraction profile. Mean flow characteristics, turbulence intensities and Reynolds shear stresses in the near field region are investigated by using Hot-wire Anemometry. An overall decrease in turbulence intensities and enhanced flow entrainment in the near field of lobed nozzle are observed.