Simultaneous Velocimetry and Thermometry of Air Using Nonresonant Heterodyned Laser-induced Thermal Acoustics
نویسندگان
چکیده
Non-resonant laser-induced thermal acoustics (LITA) is employed with heterodyne detection to measure temperature (285-295 K) and a single component of velocity (20-150 m/s) in an atmospheric pressure, subsonic, unseeded air jet. Good agreement is found with pitot-tube measurements of velocity (0.2% at 150 m/s and 2% at 20 m/s) and the isentropic expansion model for temperature (0.3%). Key words, velocimetry, thermometry, heterodyne, nonresonant Light Scattering, laser-induced thermal acoustics, LITA Subject classification. Physical Sciences
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