Experimental Study of the Collision Zone of a Boundary Layer with a Wall Jet

Laser-Doppler measurements are presented for a highly curved flow resulting from the collision of plane turbulent wall jet with a boundary layer. This configuration can be found in the case of impinging jets of a V/STOL aircraft operating in ground vicinity. The experiments were carried out for boun...

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Bibliographic Details
Main Author: Barata, Jorge M M (author)
Other Authors: Ribeiro, Samuel Dinis Galvão (author), Santos, Pedro (author), Silva, André (author)
Format: article
Language:eng
Published: 2012
Subjects:
Vortex Flow
Boundary Layer Thickness
Reynolds Stress
Aircraft Fuselages
Jet Flow
Normal Stress
Wind Tunnels
Aerodynamic Instability
Turbulence Intensity
Characteristic Velocity
Online Access:http://hdl.handle.net/10400.6/12200
Country:Portugal
Oai:oai:ubibliorum.ubi.pt:10400.6/12200
Description
Summary:Laser-Doppler measurements are presented for a highly curved flow resulting from the collision of plane turbulent wall jet with a boundary layer. This configuration can be found in the case of impinging jets of a V/STOL aircraft operating in ground vicinity. The experiments were carried out for boundary layer to wall jet velocity ratio of 0.5. The results include mean and turbulent velocity characteristics of the flow field as well as the characterization of the vorticity. The results revealed the existence of very small recirculation zones located upstream the separation point that co-exist and interact with the very well known VSTOL ground vortex. Copyright © 2009 by the American Institute of Aeronautics and Astronautics, Inc.

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