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Some experiments in partially dissociated boundary layers

Published online by Cambridge University Press:  28 March 2006

P. G. Simpkins
P. G. Simpkins
Affiliation:
Aeronautics Department, Imperial College, London, S.W. 7
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Abstract

A series of flat-plate laminar boundary layer experiments carried out in an arc-heated supersonic wind tunnel is described. Measurements of the static pressure distribution, the total pressure profiles through the boundary layer, and the heat-transfer rates to catalytic and non-catalytic surfaces at moderately high enthalpies are given and compared with various theoretical predictions. The observations indicate that the dissociation fraction affects the boundary-layer profiles through its influence on the local transport properties. It is confirmed that the atomic recombination at the surface is retarded by using a non-catalytic oxide coating, and hence the heat transfer to the wall is reduced.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 26 , Issue 1 , September 1966 , pp. 111 - 130
Copyright
© 1966 Cambridge University Press

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