Leading edge bluntness effect on the flow in a model air-inlet

Flow in an idealized air-inlet with plane walls and a rectangular cross-section is experimentally investigated. The air-inlet is mounted on a plate, at a distance well removed from its leading edge. The experiments were conducted in a Ludwig tube at M ∞ = 5 and Re ∞ L = 23×10 6 and 13×10 6 . A panor...

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Published in:Fluid dynamics 2014-07, Vol.49 (4), p.454-467
Main Authors: Borovoy, V. Ya, Mosharov, V. E., Radchenko, V. N., Skuratov, A. S., Struminskaya, I. V.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Classical Mechanics
Engineering Fluid Dynamics
Fluid- and Aerodynamics
Physics
Physics and Astronomy
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description Flow in an idealized air-inlet with plane walls and a rectangular cross-section is experimentally investigated. The air-inlet is mounted on a plate, at a distance well removed from its leading edge. The experiments were conducted in a Ludwig tube at M ∞ = 5 and Re ∞ L = 23×10 6 and 13×10 6 . A panoramic (optical) technique of measuring the heat transfer coefficient is for the first time applied to study the internal flow in an air-inlet. The data on the effect of the bluntness of the leading edges of the plate and the air-inlet cowl on the heat transfer coefficient distribution and the flow structure within the air-inlet are obtained. It is shown that in an air-inlet with large channel constriction an even small bluntness of the plate or the cowl can lead to global changes in the flow structure.
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subjects Classical and Continuum Physics
Classical Mechanics
Engineering Fluid Dynamics
Fluid- and Aerodynamics
Physics
Physics and Astronomy
title Leading edge bluntness effect on the flow in a model air-inlet
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