Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Temperature Field and Emission Spectrum Measurement of High Energy Density Steam Plasma Jet for Aluminum Powder Ignition

알루미늄 분말 점화용 고밀도 스팀 플라즈마 제트 온도장 및 방출 스펙트럼 측정

  • Lee, Sanghyup (School of Mechanical Engineering, Yonsei University) ;
  • Lim, Jihwan (School of Mechanical Engineering, Yonsei University) ;
  • Lee, Dohyung (Advanced Propulsion Technology Center, Agency for Defense Development) ;
  • Yoon, Woongsup (School of Mechanical Engineering, Yonsei University)
  • Received : 2013.06.02
  • Accepted : 2014.01.11
  • Published : 2014.02.01
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Abstract

In this study, DC (Direct current) type steam plasma igniter is developed for effective ignition of high-energy density metal aluminum and gas temperature is measured by emission spectrum of OH radical. Because of the ultra-high gas temperature, the DC plasma jet is measured by Boltzmann plot method which is the non-contact optical technique and spectrum comparison-analysis. And both methods were applied to experiment after accurate verification. As a result, we could identify that plasma jet temperature is 2900 K ~ 5800 K in the 30 mm range from the nozzle tip.

본 연구에서 고에너지 금속 알루미늄의 효과적인 점화를 위해 개발한 직류 방식의 스팀 플라즈마 점화기 가스온도를 OH radical의 방출 스펙트럼을 사용하여 측정하였다. 플라즈마 제트온도는 초고온이므로 비접촉식 광학 계측 방법인 볼츠만 기울기법과 스펙트럼 비교 분석법을 이용하여 측정하였으며 각각의 방법은 정밀하게 검증 후 실험에 적용되었다. 플라즈마 점화기의 노즐 팁으로부터 30 mm 범위에서의 제트온도 측정결과 두 방법 모두 알루미늄의 점화온도(${\approx}2400K$) 이상의 2900 K ~ 5800 K를 확인할 수 있었다.

Keywords

References

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