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Two-dimensional viscous flow past flexible sail sections close to ideal incidence

Published online by Cambridge University Press:  04 July 2016

P. S. Jackson  and
S. P. Fiddes
P. S. Jackson
Affiliation:
Department of Mechanical Engineering , University of Auckland, New Zealand
S. P. Fiddes
Affiliation:
Department of Aerospace Engineering , University of Bristol, Bristol, UK
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Abstract

A model of the viscous flow past a flexible sail section operating near the ideal incidence is described. Viscous effects are calculated via weak viscous-inviscid interaction of a panel method and an integral boundary layer method, and a new model for the leading edge separation bubble is introduced. The flexible section is allowed to deform in response to the pressure and shear stresses acting on it. Results are presented for the effect of incidence, excess length and Reynolds number on the development of the boundary layers on each side of the section and the consequences for the lift and drag of the section are described. The numerical model is compared with experimental results, giving in general good agreement and shedding light on the physics of the viscous flow past flexible membranes.

Type
Research Article
Information
The Aeronautical Journal , Volume 99 , Issue 986 , July 1995 , pp. 217 - 225
Copyright
Copyright © Royal Aeronautical Society 1995 

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