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Reynolds Stress Field of a Stronger Wall Jet Managed by a Streamwise Vortex: Effect of Periodic Perturbation

[+] Author Affiliations
Shinsuke Mochizuki, Hideo Osaka

Yamaguchi University, Ube, Japan

Seiji Yamada

Yamaguchi Pref. Institute of Technology, Ube, Japan

Paper No. FEDSM2003-45228, pp. 2661-2666; 6 pages
doi:10.1115/FEDSM2003-45228
From:
  • ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
  • Volume 1: Fora, Parts A, B, C, and D
  • Honolulu, Hawaii, USA, July 6–10, 2003
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3696-7 | eISBN: 0-7918-3673-8
  • Copyright © 2003 by ASME

abstract

Six Reynolds stress components were studied experimentally to understand evolution of streamwise vortex and a plane wall jet. It is seen that periodic perturbation are able to modify non-isotropic Reynolds stress field involved in the transport equation for streamwise vorticity. Modified Reynolds stress field accelerates development of vortex radius in spanwise direction. Interaction between streamwise vortex and spanwise eddies in the outer layer of the plane wall jet strengthen both velocity and length scales of large-scale eddies and increase streamwise momentum flux in enhancement of entrainment process.

Copyright © 2003 by ASME
Topics: Stress , Vortices

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