Published October 20, 1992
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Journal Article
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Planar Rayleigh scattering results in helium-air mixing experiments in a Mach-6 wind tunnel
Abstract
Planar Rayleigh scattering measurements with an argon—fluoride excimer laser are performed to investigate helium mixing into air at supersonic speeds. The capability of the Rayleigh scattering technique for flow visualization of a turbulent environment is demonstrated in a large-scale, Mach-6 facility. The detection limit obtained with the present setup indicates that planar, quantitative measurements of density can be made over a large cross-sectional area (5 cm × 10 cm) of the flow field in the absence of clusters.
Additional Information
© 1992 Optical Society of America. Received 27 August 1991. The authors thank Ray Gregory for the design and implementation of the control circuit for the data acquisition system, Bruce Barnes and Bill Chambers for the expert mechanical design and assembly of the structure supporting the laser and optics, Kelly Debure for her image processing skills, and the facility operators for their skill in providing conditions for in situ calibrations and for obtaining stagnation conditions beyond typical facility operation.Attached Files
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SHIao92.pdf
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- CaltechAUTHORS:20120322-092613783
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