Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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Numerical Study on Flow Distribution of Fuel Nozzles for a Combustor in a Micro Gas Turbine

마이크로 가스 터빈용 연소기의 연료 노즐의 유량 분배에 관한 수치 해석적 연구

  • Kim, Taehoon (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM)) ;
  • Do, Kyu Hyung (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM)) ;
  • Han, Yong-Shik (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM)) ;
  • Kim, Myungbae (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM)) ;
  • Choi, Byung-Il (Department of Plant Safety Technology, Korea Institute of Machinery and Materials (KIMM))
  • 김태훈 (한국기계연구원 에너지플랜트안전연구실) ;
  • 도규형 (한국기계연구원 에너지플랜트안전연구실) ;
  • 한용식 (한국기계연구원 에너지플랜트안전연구실) ;
  • 김명배 (한국기계연구원 에너지플랜트안전연구실) ;
  • 최병일 (한국기계연구원 에너지플랜트안전연구실)
  • Received : 2014.10.23
  • Accepted : 2014.12.05
  • Published : 2014.12.30
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Abstract

Flow distribution of fuel nozzles for a combustor in a micro gas turbine is numerically investigated. The fuel supply system for the present study has 12 single nozzles with a diameter of several hundred micrometers. A uniform temperature distribution of a combustor outlet should be achieved for maximizing the lives of the turbine blades and nozzle guide vanes. For this, it is very important to uniformly supply fuel to a combustor. In order to investigate flow distributions of fuel nozzles, numerical models for fuel nozzles are made and solved by a commercial code, ANSYS FLUENT. An effect of a fuel nozzle diameter and fuel flow rates on flow distribution of fuel nozzles is numerically investigated. As a result, non-uniformity is increasing as a diameter of a single fuel nozzle increases. Finally, an appropriate diameter of a single fuel nozzle is suggested.

Keywords

References

  1. T. Nagashima et al., Lessons Learnt from Ultra-Micro-Gas Turbine Development at University of Tokyo, Invited Lecture, von Karman Institute for Fluid Dynamics Lecture Series on Micro Gas Turbines, Burssels, 2005.
  2. E. Matsuo, H. Yoshiki, T. Nagasima, and T. Kato, Toward the Development of the Finger Top Gas Turbines, IGTC 2003, Tokyo, 2003.
  3. A. H. Lefebvre, Gas Turbine Combustion, 2nd Ed., Taylor & Francis, 1999, Ch. 1.
  4. ANSYS FLUENT 14.5, ANSYS, 2013.

Cited by

  1. Study on the Performance Analysis in the Micro Gas Turbine with Different Input Revolutions vol.18, pp.5, 2016, https://doi.org/10.17958/ksmt.18.5.201610.771