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Effects of Contraction Geometry on Non-Isotropic Free-Stream Turbulence

Published online by Cambridge University Press:  07 June 2016

A Klein  and
V Ramjee
A Klein
Affiliation:
Motoren- und Turbinen-Union, Munich
V Ramjee
Affiliation:
Indian Institute of Technology, Madras
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Summary

The effects of contraction geometry on non-isotropic free-stream turbulence were investigated experimentally. Eight nozzles of circular cross-section, having different contour shapes and various non-dimensional lengths, were tested. The contraction ratio was 10:1. The results are compared with test data for isotropic turbulence and with a well-known linear theory. It is found that the variation of the lateral component of turbulent energy along the nozzles is similar to that with isotropic free-stream turbulence, whereas the behaviour of the longitudinal component is entirely different. The change of turbulence depends on local contraction ratio only.

Type
Research Article
Information
Aeronautical Quarterly , Volume 24 , Issue 1 , February 1973 , pp. 34 - 38
Copyright
Copyright © Royal Aeronautical Society. 1973

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References

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