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A study of wall jets resulting from singleand multiple inclined jetimpingement

Published online by Cambridge University Press:  04 July 2016

P. Miller
P. Miller*
Affiliation:
Miller & Wilson Aerodynamics Research Bath, UK
*
†Now withthe British Defence Staff,British Embassy,Washington DC.
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Extract

An experimental investigation into the wall jetscreated by a single inclined, twin inclined and afour inclined jet impingement arrangement isdescribed. Wall jet velocity profiles were recordedat various azimuthal and radial locations for arange of nozzle heights at jet pressuresrepresentative of current V/Stol technology. Use wasmade of wall jet properties established for a normaljet impingement to provide a means of comparing theattributes of the various configurations.Non-splayed twin inclined impinging jets generatesymmetry plane reinforcement and weakening inregions remote from the interaction. Splayed jetgeometries show significant height effects on groundplane flow development. The four-jet configurationalso demonstrates velocity reinforcement at thelines of wall jet interaction, together with aweakening of the flows remote from the interactionplanes. Reinforcement velocities for the four-jetcase are significantly lower than those expectedfrom the constituent twin-jet flows.

Information

Type
Research Article
Information
The Aeronautical Journal , Volume 99 , Issue 986 , July 1995 , pp. 201 - 216
Copyright
Copyright © Royal Aeronautical Society 1995 

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