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Optimisation of air-jet vortex generators with respect to system design parameters

Published online by Cambridge University Press:  04 July 2016

T. P. Bray  and
K. P. Garry
T. P. Bray
Affiliation:
College of AeronauticsCranfield University, UK
K. P. Garry
Affiliation:
College of AeronauticsCranfield University, UK
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Abstract

A simple technique is proposed that allows the definition of the geometry and characteristics of an air-jet vortex generator to be defined, using the system requirements in practical design. Typically, the aircraft designer is concerned with the mass flow-rate and air pressure requirements of any pneumatic system for inclusion to an airframe. These parameters are not congruent with those for air-jet vortex generator aerodynamic design, and therefore, some tool is required to bridge the gap.

Such a tool is proposed, based on empirical methods for the prediction of air-jet vortex generator behaviour. The technique allows the comparison of the vortex strength, and the system inputs (the jet mass flow-rate and the air-jet plenum pressure) for the air-jet, for a range of jet nozzle diameters and jet velocity ratios. Through this comparison, the optimum air-jet design can be reached for a given system input.

Type
Research Article
Information
The Aeronautical Journal , Volume 103 , Issue 1028 , October 1999 , pp. 475 - 480
Copyright
Copyright © Royal Aeronautical Society 1999 

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