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An Analytical Method for the Design of Two-Dimensional Contractions

Published online by Cambridge University Press:  04 July 2016

W. T. F. Lau
W. T. F. Lau*
Affiliation:
Department of Mechanical Engineering, The University of Sydney
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Summary

An analytical method is presented for the design of two-dimensional contractions. In this method, the complex potential of the flow of an infinite row of equally spaced line sources normal to a uniform stream is obtained. By adjusting the strength of the sources, the streamlines of the main stream are used as boundaries of two-dimensional contractions of various contraction ratios. It is found that, in all cases, there is a region in the main stream between two neighbouring sources in which the speed of flow increases monotonically along streamlines. Contractions formed by any of the streamlines in this region would therefore have favourable pressure distribution along their boundaries except for very small adverse pressure gradient at the inlet and outlet which are due to the introduction of parallel sections.

Information

Type
Technical Notes
Information
The Aeronautical Journal , Volume 68 , Issue 637 , January 1964, pp. 59 - 62
Copyright
Copyright © Royal Aeronautical Society 1964

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