Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study on Combustion Characteristics and Flow Analysis of a Lean Premixed Flame in Lab-Scale Gas Turbine Combustor

모형 가스터빈 연소기에서 희박 예혼합 화염의 연소 특성 및 유동 해석에 관한 연구

  • 유혜연 (부산대학교 대학원 기계공학과) ;
  • 김규보 (부산대학교 대학원 기계공학과) ;
  • 전충환 (부산대학교 기계공학부) ;
  • 장영준 (부산대학교 기계공학부, 화력발전에너지분석센터)
  • Published : 2008.08.01
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Abstract

The characteristics of combustion and flow for a lean premixed flame in lab-scale gas turbine combustor was studied through experiment and numerical analysis. From the experiment, flame structure and heat release rate were obtained from OH emission spectroscopy. Qualitative comparisons were made line-integrated OH chemiluminescence image and abel-transformed one. NOx analyzer was implemented to get the characteristic of NOx exhaust from the combustor. From the numerical analysis, the thermal distribution and characteristic of recirculation zone with the change of fuel-air mixing degree, the characteristic of methane distribution with equivalence ratio in the combustor respectively. Total heat release rate is increased with increasing equivalence ratio. Thermal Nox is reduced with increasing fuel-air mixing degree. Increasing equivalence ratio results in the decrease of the size of reaction zone and alteration of the position of the reaction zone into the entrance of the combustor.

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References

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