Rayleigh imaging and flow tagging in ground test facilities

Miles, R and Lempert, W. and Zhang, B. and Forkey, J and Glesk, Ivan (1991) Rayleigh imaging and flow tagging in ground test facilities. In: International Congress on Instrumentation in Aerospace Simulation Facilities, 1991. IEEE, Piscataway, NJ, United States, pp. 255-261.

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Abstract

The authors present preliminary results on the application of ultraviolet Rayleigh imaging and RELIEF flow tagging to a high Reynolds number, Mach 3 blow-down air facility at Princeton University's Gas Dynamics Laboratory. RELIEF tagging was accomplished using stimulated Raman scattering to vibrationally excited oxygen molecules. Examples include instantaneous images of boundary-layer structure and shock-wave/boundary-layer interactions, as well as results of flow tagging velocity measurements in the free-stream and boundary-layer regions of this facility. The future implementation of filtered Rayleigh scattering is also discussed.