A nonintrusive technique for measuring dynamic gas density properties is described. Molecular Rayleigh scattering is used to measure the time-history of gas density simultaneously at eight spatial locations at a 50 kHz sampling rate. The data are analyzed using the Welch method of modified periodograms to reduce measurement uncertainty. Cross-correlations, power spectral density functions, cross-spectral density functions, and coherence functions may be obtained from the data. The technique is demonstrated using low speed co-flowing jets with a heated inner jet.
Multiple point dynamic gas density measurements using molecular Rayleigh scattering
1999-01-01
708404 byte
Conference paper
Electronic Resource
English
Multiple Point Dynamic Gas Density Measurements Using Molecular Rayleigh Scattering
British Library Conference Proceedings | 1999
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