Title :
Structure of counterflow flames: comparison of CARS CO and temperature measurements with numerical calculation
Author :
Kyung-Tae Kang ; Suk Ho Chung ; Jae Won Hahn ; Seung Nam Park
Author_Institution :
Korea Inst. of Ind. Technol., South Korea
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
The structure of methane and propane flames in a counterflow burner is studied. The method used for the concentration measurement of CO, which is a reaction intermediate and maintains a low concentration in the flames, is from the modulation dip in the spectrum of broadband coherent anti-Stokes Raman spectroscopy (CARS) arising from the cold-band Q-branch resonant signal of CO superimposed on the nonresonant background. The measured CO profiles together with the temperature and the velocity, using nitrogen CARS and laser Doppler velocimetry, are compared with the numerical results accounting for the detailed kinetics suggested by Peters [1993] with plug flow assumption.
Keywords :
carbon compounds; chemically reactive flow; coherent antiStokes Raman scattering; flames; gas mixtures; spectral line breadth; spectral methods of temperature measurement; spectrochemical analysis; CO; CO concentration measurement; broadband CARS; cold-band Q-branch resonant signal; counterflow burner; counterflow flames; flame structure; laser Doppler velocimetry; methane flames; modulation dip; nonresonant background; plug flow assumption; premixed flames; propane flames; reaction intermediate; temperature measurements; Fires; Fluid flow measurement; Kinetic theory; Laser velocimetry; Nitrogen; Raman scattering; Resonance; Spectroscopy; Temperature; Velocity measurement;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on
Conference_Location :
Seoul, South Korea
Print_ISBN :
0-7803-5661-6
DOI :
10.1109/CLEOPR.1999.817855
