24th Congress of International Council of the Aeronautical Sciences, 29 August-3, September 2004, Yokohama, Japan
Paper ICAS 2004-4.2.2

A PIV AND CFD INVESTIGATION OF CAVITY FLOWS IN THE TRANSONIC FLOW REGIME

S. A. Ritchie, N. J. Lawson, K. Knowles
Aeromechanical Systems Group, Department of Aerospace, Power and Sensors, Cranfield University & RMCS Shrivenham, Swindon, UK

Keywords: cavity flow, transonic, PIV, CFD

Particle image velocimetry (PIV) measurements are presented from rectangular cavities of different length-to-depth ratios at a Mach number of 0.85 in the RMCS transonic wind tunnel. The measurements are made in l/h=5 and l/h=14 cavities in order to encompass the open and closed flow regimes. The time- averaged two-dimensional PIV results are compared with time-averaged two-dimensional URANS CFD predictions.

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