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A numerical study of the application of vane and air-jet vortexgenerators

Published online by Cambridge University Press:  04 July 2016

C. Küpper  and
F. S. Henry
C. Küpper
Affiliation:
Department of Aeronautical, Civil and Mechanical Engineering City University, London, UK Department of Meteorology, University of Reading, Reading, UK
F. S. Henry
Affiliation:
Department of Aeronautical, Civil and Mechanical Engineering City University, London, UK
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Abstract

The objective of the work described in this paper was to identify differences inthe flow fields immediately downstream of air-jet and vane vortex generators.The flows were assumed to be incompressible and fully turbulent and were solvedusing the finite volume, Navier-Stokes code CFX 4 (CFDS, AEA Technology,Harwell) on a non-orthogonal, body-fitted grid using thek-ε turbulence model and standard wall functions.The behaviour of the longitudinal vortices produced by the vanes and air jets ispresented in terms of stream-wise and cross-stream velocity profiles,circulation and peak vorticity decay, peak vorticity paths in the cross-streamand streamwise direction, cross-stream vorticity profiles, and cross-streamdistribution of shear stress. The predicted results show that the vanes and airjets considered produce vortices with significantly different circulationstrengths, but that the enhancement of skin friction was of similar magnitude inboth cases.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 105 , Issue 1047 , April 2001 , pp. 255 - 265
Copyright
Copyright © Royal Aeronautical Society 2002 

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