23rd Congress of International Council of the Aeronautical Sciences, 8-13 September, 2002, Toronto, Canada
Paper ICAS 2002-3.6.2

NUMERICAL PREDICTIONS AND EXPERIMENTS ON SUPERSONIC JET MIXING FROM CASTELLATED NOZZLES

A. Saddington, N. J. Lawson, K. Knowles
Cranfield University, UK

Keywords: jet, mixing, underexpanded, supersonic, turbulent, cfd, ldv

This work presents a numerical and experimental study of mixing in underexpanded, supersonic turbulent jets issuing from axisymmetric and castellated nozzles into quiescent conditions. Experimental studies used laser doppler velocimetry and pitot probe measurements along the jet centreline at a nozzle pressure ratio of 4. A computational fluid dynamics study was also conducted. Comparison of the LDV and pitot probe data showed good agreement with the CFD model.

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