Hostname: page-component-586b7cd67f-rdxmf Total loading time: 0 Render date: 2024-11-24T17:31:23.221Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access

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

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Batchelor, G K Proudman, I The effect of rapid distortion of a fluid in turbulent motion. Quarterly Journal of Applied Mathematics, Vol 7, pp 83–103, 1954.Google Scholar
2 Batchelor, G K The Theory of Homogeneous Turbulence. Cambridge University Press, 1959.Google Scholar
3 Uberoi, M S Effect of wind-tunnel contraction on free-stream turbulence. Journal of the Aeronautical Sciences, Vol 23, pp 754–764, 1956.Google Scholar
4 Thwaites, B On the design of contractions for wind tunnels. ARC R & M 2278, 1946.Google Scholar
5 Batchelor, G K Shaw, F S Consideration of the design of wind tunnel contractions. Australian Council for Aeronautics, Report ACA-4, 1944.Google Scholar
6 Bradshaw, P Pankhurst, R C The design of low-speed wind tunnels. Progress in Aeronautical Sciences, Vol 5, Macmillan, 1964.Google Scholar
7 Dryden, H L Schubauer, G B The use of damping screens for the reduction of wind-tunnel turbulence. Journal of the Aeronautical Sciences, Vol 14, pp 221-228, 1947.Google Scholar