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Effect of Initial Conditions on Constant Pressure Mixing Between Two Turbulent Streams

Published online by Cambridge University Press:  07 June 2016

Sachidananda Kangovi
Sachidananda Kangovi*
Affiliation:
National Aeronautical Laboratory, Bangalore 560017
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Summary

A study of the process of mixing and wake development has varied applications in wide ranging fields like jet ejectors, wake signatures, base pressure control, combustors, flow over cut-outs, jet noise and jet interactions. In real flows the wake is usually divided into two zones namely, the near field and the far field. The near field is usually controlled by initial conditions which involve two back-to-back boundary layers separating from the trailing edge of a solid surface. In the far field the flow becomes fully developed and assumes self similarity. The properties of fully developed far field have been well established but little is known about the near field. This paper describes the application of an integral analysis to study the effects of initial conditions like velocity ratio, initial boundary layer thickness, compressibility and temperature ratio on the development of near field of the turbulent mixing layer between two compressible, non-isoenergetic streams at constant pressure. Results include velocity and temperature profiles and the location of jet boundary line in the mixing layer. These results show the gradual approach of the mixing layer to self-preservation.

Type
Research Article
Information
Aeronautical Quarterly , Volume 34 , Issue 1 , February 1983 , pp. 61 - 75
Copyright
Copyright © Royal Aeronautical Society. 1983

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References

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