Proceedings of the Korean Society of Propulsion Engineers Conference (한국추진공학회:학술대회논문집)

  • 2004.03a
  • /
  • Pages.485-490
  • /
  • 2004
  • /
  • 1975-342X(pISSN)
The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지

Experimental Study on Flame Stabilization and $NO_{x}$ Reduction in a Non-Premixed Burner with Sawtooth Mixer

  • Fujimoto, Yohei (Department of Aeronautics and Astronautics, Kyushu University) ;
  • lnokuchi, Yuzo (Department of Aeronautics and Astronautics, Kyushu University) ;
  • Orino, Minoru (Department of Aeronautics and Astronautics, Kyushu University) ;
  • Yamasaki, Nobuhiko (Department of Aeronautics and Astronautics, Kyushu University)
  • Published : 2004.03.01
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Abstract

Sawtooth mixing device used in a non-premixed burner is evaluated for flame stabilization and NO$_{x}$ reduction. Three mixers with different blade angles are tested. Methane is delivered through the fuel jet and air passes through the co-flow annulus. The flame mode changes (attached flame, lifted flame and extinction) against the fuel flow speed are measured, and the stability diagram is drawn. Moreover, by traversing thermocouple and sampling probe in the flame, the distribution of temperature and NO$_{x}$ mole fraction are measured. With the change in blade angle, flame shape, flame stabilization, the distribution of temperature and NO$_{x}$ mole fraction are changed considerably.rably.

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