Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-05T08:45:04.223Z Has data issue: false hasContentIssue false
  • English
  • Français

The Mixing of Turbulent Supersonic Fuel-Air Streams

Published online by Cambridge University Press:  07 June 2016

J. M. Forde
J. M. Forde*
Affiliation:
Mechanical Engineering Research Laboratories, McGill University
Get access

Summary

An integral part of the study of supersonic combustion is the investigation of supersonic turbulent mixing of dissimilar fluids. Experimental results obtained in the course of investigating the turbulent mixing zone between supersonic streams of CO3 and air are presented. Good correlation between observation and available theories has been obtained in terms of the parameter ξ=σy/x. The correlating parameter σ defines the spreading rate of the mixing zone. The available theories, though not developed for these specific conditions, are shown to be applicable to the turbulent mixing of supersonic streams.

The correlating parameter σ was determined for three different combinations of internal and external flow Mach numbers. The values found for σ were 18, 16·3, 15·3 for constant external Mach number 1·62 and internal Mach number 1·62, 1·53, 1·47 respectively. The magnitudes of σ showed the expected trend, that is the higher value implies the least divergence of the mixing boundaries.

The reasonable agreement with experiment and the simplicity of application of the momentum integral form of solution would appear to favour the use of this approach for the theoretical prediction of the mixing conditions.

Type
Research Article
Information
Aeronautical Quarterly , Volume 16 , Issue 4 , November 1965 , pp. 377 - 387
Copyright
Copyright © Royal Aeronautical Society. 1965

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. Pai, S. I. Fluid Dynamics of Jets, van Nostrand, 1954.Google Scholar
2. Schlichting, H. Boundary Layer Theory. Pergamon Press, 1955.Google Scholar
3. Szablewski, W. Contributions to the Theory of the Spreading of a Free Jet Issuing from a Nozzle. September 1944. Translated as N.A.C.A. T.M. 1311, November 1951.Google Scholar
4. Szablewski, W. The Diffusion of a Hot Air Jet in Air in Motion. September 1946. Translated as N.A.C.A. T.M. 1288, December 1950.Google Scholar
5. Napolitano, L. G. Two-Dimensional Plane Mixing of Homogeneous and Inhomogeneous Streams. Department of Aeronautical Engineering and Applied Mechanics, Polytechnic Institute of Brooklyn, PIBAL Report 400, November 1957.Google Scholar
6. Napolitano, L. G. Turbulent Mixing of Streams of Different Gases. Instituto di Aeronautico, University of Naples, July 1960.Google Scholar
7. Squire, H. B. and Trouncer, J. Round Jets in a General Stream. A.R.C. R. & M. 1974, 1944.Google Scholar