Title :
Flame stabilization in an axisymmetric curved-wall jet burner with variation in burner tip configurations
Author :
Yong Sukh Gil ; Tae Won Chung ; Suk Ho Chung
Author_Institution :
Sch. of Mech. & Aerosp. Eng., Seoul Nat. Univ., South Korea
fDate :
Aug. 30 1999-Sept. 3 1999
Abstract :
An axisymmetric curved-wall jet (CWJ) burner is designed with flat and concave tips and the characteristics of flame stabilization is investigated experimentally. To identify the flame stabilization mechanism in the CWJ burner, the planar laser induced fluorescence (PLIF) technique for OH measurement and the coherent anti-Stokes Raman scattering (CARS) technique for temperature measurement are applied. A broadband CARS technique was used for temperature proving. The present results demonstrating higher temperature near the burner tip compared to that of the boundary of recirculation suggest that the flame is stabilized through a recirculation zone. The results that the blowoff velocity is much higher for flat and concave tips than the spherical tip support this argument.
Keywords :
chemical variables measurement; chemically reactive flow; coherent antiStokes Raman scattering; flames; fluorescence; jets; photoluminescence; spectral methods of temperature measurement; spectrochemical analysis; turbulence; OH measurement; axisymmetric curved-wall jet burner; blowoff velocity; broadband CARS technique; burner tip; burner tip configurations; coherent anti-Stokes Raman scattering technique; concave tips; flame stabilization; flame stabilization mechanism; flat and concave tips; planar laser induced fluorescence; recirculation zone; spherical tip; temperature measurement; temperature proving; Fires; Histograms; Signal analysis; Stability; Temperature distribution; Volume 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.1999.811355
