A study on Self-excitations in Laminar Lifted Coflow-jet Flames

층류 동축류 제트 부상화염에서의 자기진동에 관한 실험적 연구

  • 반규호 (부경대학교 기계공학과) ;
  • 이원준 (부경대학교 기계공학과) ;
  • 박정 (부경대학교 기계공학과) ;
  • 길상인 (한국기계연구원 환경 에너지 기계시스템) ;
  • 윤진한 (한국기계연구원 환경 에너지 기계시스템) ;
  • 임인권 (명지대학교 기계공학과)
  • Published : 2014.11.27

Abstract

A study on laminar coflow jet flames diluted with helium and nitrogen has been conducted to investigate self-excitations. The stability map was provided with a function of nozzle exit velocity and fuel mole fractions of propane or methane. The results show that there exist three types of self-excitations; (1) buoyancy-driven self-excitation (BDSE), (2) Lewis number induced self-excitation coupled with buoyancy (LCB) and (3) Lewis number induced self-excitation (LISE).

Acknowledgement

Supported by : 지식경제부