한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제19권6호
  • /
  • Pages.1-9
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  • 2015
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  • 1226-6027(pISSN)
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  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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전열포 플라즈마 생성장치의 영차원 해석모델

Zero-Dimensional Modeling of Plasma Generator in Electrothermal Gun

  • Kim, Kyoungjin (Department of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • Park, Joong-Youn (Department of Mechanical System Engineering, Kumoh National Institute of Technology)
  • 투고 : 2015.07.30
  • 심사 : 2015.10.06
  • 발행 : 2015.12.01
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초록

본 연구에서는 전열포의 플라즈마 발생장치에서 외부회로로부터 가해지는 펄스형 전기에너지에 의한 플라즈마 발생현상을 대상으로 영차원적 모델링 및 전산해석을 수행하였다. 전극 사이의 보어 내 플라즈마의 균일 온도 가정을 채용하여 질량 및 에너지 방정식을 간소화하였으며, 보어 및 전극 표면 상의 용발 모델 및 플라즈마 물성치 계산모델과 연계하였다. 해석결과는 1차원적 해석모델과 비교하여 상당히 일치함을 보여 영차원적 해석결과의 유효성을 확인할 수 있다.

This paper introduces a zero-dimensional modeling on the plasma generation in electrothermal gun operation. The plasma generator consists of alumina bore and aluminum electrodes which is electrically powered by outer pulse forming network and, traditionally, its numerical simulations have employed time-dependent one-dimensional governing equations. However, by assuming isothermal approximation along the bore and choked bore exit condition, present analysis simplifies the mass and energy equations into zero-dimensional approximation of plasma conditions coupled with mass ablation model and plasma property evaluation. The numerical results show good agreement with the corresponding one-dimensional computations and thus verify the present modeling approach.

키워드

참고문헌

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