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Rapid tuning CW laser technique for measurements of gas velocity, temperature, pressure, density, and mass flux using NOAn intracavity-doubled rapid-tuning CW ring dye laser was used to acquire fully resolved absorption profiles of NO line pairs in the A-X band at 225 nm at a rate of 4 kHz. These profiles were utilized for simultaneous measurements of flow parameters in the high-speed 1D flows generated in a shock tube. Velocity was determined from the Doppler shift, measured using a pair of profiles simultaneously acquired at different angles with respect to the flow direction. Temperature was determined from the intensity ratio of the adjacent lines. Pressure and density were found both from the collisional broadening and the fractional absorption. From this information the mass flux was determined. The results compare well to 1D shock calculations.
Document ID
19910061232
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chang, Albert Y.
(Stanford Univ. CA, United States)
Dirosa, Michael D.
(Stanford Univ. CA, United States)
Davidson, David F.
(Stanford Univ. CA, United States)
Hanson, Ronald K.
(Stanford University CA, United States)
Date Acquired
August 14, 2013
Publication Date
July 20, 1991
Publication Information
Publication: Applied Optics
Volume: 30
ISSN: 0003-6935
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
91A45855
Distribution Limits
Public
Copyright
Other

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