From laboratory to large-scale facility - Scaling of the RELIEF velocimetry technique
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© 1996, American Institute of Aeonautioj and Astronautics, Inc. The system design issues associated with applying the RELIEF (Raman excitation + laser-induced electronic fluorescence) flow-tagging velocimetry technique to large-scale wind tunnels have been investigated. RELIEF measurements were obtained in laboratory air at tagging distances of 0. 5-1 m and imaging distances of 1-2 m to simulate the conditions which would be encountered in large facilities. The data indicate that velocity measurement accuracies of better than 1 m/s with a spatial resolution of 1 cm3 can be realized. The spectral characteristics of a tunable, line-narrowed broadband ArF excimer laser were assessed, and the laser was found to be a suitable alternative to the more expensive injection-locked laser commonly employed for RELIEF measurements.
author list (cited authors)
Grinstead, J. H., Lempert, W. R., Miles, R. B., & Lavid, M.
Grinstead, J., Lempert, W., Miles, R., & Lavid, M.