In this study we demonstrate in-situ quantitative measurements of temperature and OH radical concentration profiles in a post-flame region between premixed twin flames, and thus show the potential for use of diode-laser absorption spectroscopy as a combustion diagnostic tool. The diode laser used in this study is an external cavity diode laser (NewFocus Model 6328) operating near 1.5 /spl mu/m. The laser frequency was modulated and slowly scanned across the absorption features simultaneously by applying a 1 kHz sinusoidal wave and a 0.15 Hz sawtoothed signal onto the voltage input of the piezoelectric transducer attached to the tuning mirror of the laser cavity.
Measurements of temperature and OH radical concentration in combustion gases by absorption spectroscopy with a diode laser
01.01.1999
138442 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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Tema Archiv | 1999
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