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The Size of Aerofoil Models for Quantitative Hydraulic Analogy Research

Published online by Cambridge University Press:  28 July 2016

R. A. A. Bryant
R. A. A. Bryant*
Affiliation:
The New South Wales University of Technology
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Extract

In a recent article Lundberg has made reference to use of the “ Hydraulic Analogy ” for quantitative investigation of gas dynamics phenomena. This is quite feasible provided that the basic analogy and its limitations are properly understood. In fact, considerable progress has already been made and it has been proved possible to utilise the analogy for both supersonic and transonic research.

A study of the mathematical analogy indicates that the strongest physical analogy between a two-dimensional (inviscid) gas flow and a three-dimensional (viscous) water flow exists for the transonic case when the water depth is approximately one quarter inch and the model is towed. Only thin profiles with small incidence can be sensibly investigated. Under such conditions the analogous water flow may be considered as a distorted dissimilar model of a corresponding prototype gas flow.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 60 , Issue 543 , March 1956 , pp. 208 - 209
Copyright
Copyright © Royal Aeronautical Society 1956

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References

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