Published 6 issues per year
ISSN Print: 2150-766X
ISSN Online: 2150-7678
Indexed in
QUANTITATIVE ABSORPTION AND FLUORESCENCE DIAGNOSTICS IN COMBUSTION SYSTEMS
ABSTRACT
Laser-based diagnostic techniques, developed primarily within the combustion community, offer considerable promise for nonintrusive measurements in reactive gaseous flows and propulsion systems. In this paper we overview three diagnostic methods under development at Stanford University: spectrally resolved line-of-sight absorption, conducted with wavelength-modulated semiconductor diode laser and ring dye laser sources; spectrally resolved single-point laser-induced fluorescence, using a rapid-tuning ring dye laser; and planar laser-induced fluorescence, conducted with tunable pulsed dye laser source and intensified CCD array cameras. These methods have unique capabilities for nonintrusive measurements of flowfield properties such as temperature, species concentration, velocity, density and pressure, as well as quantities derived from these parameters such as mass and momentum fluxes. Species monitored in current studies include NO, OH, O2 and H2O.