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The relation between losses and entry-flow conditions in short dump diffusers for combustors

Published online by Cambridge University Press:  04 July 2016

A. Klein
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Summary

An experimental correlation is presented between the losses and the inlet flow conditions in short dump diffusers for turbojet combustors. Cascades of compressor blades upstream of the diffuser were used to make the flow field at inlet similar to that in a real jet engine. The flow field was altered in two ways — by varying the distance between the cascades and the diffuser inlet plane and by changing the blade aspect ratio. The measurements show clearly that distortions in the radial direction affect the losses to a much larger extent than non-uniformities in the circumferential direction. In consequence, the performance can be correlated to a satisfactory degree of accuracy simply by using the radial blockage factor at inlet.

Type
Research Article
Information
The Aeronautical Journal , Volume 92 , Issue 920 , December 1988 , pp. 390 - 396
Copyright
Copyright © Royal Aeronautical Society 1988 

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References

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