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A Simple Means of Measuring Vortex Strength, and the Performance of Triangular Ramp-Type Vortex Generators in a Uniform Velocity Field

Published online by Cambridge University Press:  04 July 2016

A. D. McEwan  and
P. N. Joubert
A. D. McEwan
Affiliation:
Mechanical Engineering Department, University of Melbourne
P. N. Joubert
Affiliation:
Mechanical Engineering Department, University of Melbourne
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Extract

The performance of triangular ramp vortex generators of a type used for boundary layer separation control, has been compared with that of equivalent wing or vane type of lifting generators, in a uniform velocity field, and was shown to be substantially inferior. Performance was established using a novel vortex strength measuring device of unusual simplicity, for which calibrations are given and applications are discussed.

The usefulness of vortex generators in avoiding boundary layer separation due to an adverse pressure gradient has been established. Little, however, is known of the nature of vortex modified boundary layers. As part of an investigation into convective heat transfer through such layers it was desired to compare the circulation-drag performance of two representative generator configuration types, these being the popularly used stub wing or vane type, and the edge separation, plough or wedge type.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 66 , Issue 624 , December 1962 , pp. 783 - 785
Copyright
Copyright © Royal Aeronautical Society 1962

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References

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