Abstract
DOI: 10.2514/1.26624 Two tunable diode laser temperature sensors are compared for nonintrusive determination of gas temperature and temperature fluctuations in a swirl-stabilized atmospheric-pressure flame. Time-resolved temperature is inferred from the ratio of integrated absorbance of two selected H2O transitions observed by scanning the wavelength of a single diode laser. The first sensor uses direct absorption near 1:8 � m, and the second sensor uses wavelength-modulation spectroscopy with second-harmonic detection (WMS-2f) near 1:4 � m. Both sensors are based on the single-laser concept, which can make the system compact, rugged, low-cost, and simple to operate. The scanned-wavelength approach can minimize interference from emission and provide robust absorption measurements. Time-resolved and real-time (no postprocessing) temperature measurements are presented for both liquid and gaseous fuels, and asystematic comparison of the performance of the two sensors is reported. We find the two-lineabsorptionratiotohaveexcellentpotentialasatemperature-basedcontrolvariablefortheseswirl-stabilized flames.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
