한국가시화정보학회지 (Journal of the Korean Society of Visualization)

  • 제11권2호
  • /
  • Pages.34-40
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  • 2013
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  • 1598-8430(pISSN)
  • /
  • 2093-808X(eISSN)
한국가시화정보학회 (The Korean Society of Visualization)
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고체로켓 모사장치 내삽노즐 주위의 와류튜브 가시화

Visualization of Vortex Tube near Submerged Nozzle in Simulator of Solid Rocket Motor

  • 김도헌 (한국항공대학교 대학원) ;
  • 신봉기 (한국항공대학교 항공우주산업기술연구소) ;
  • 손민 (한국항공대학교 대학원) ;
  • 구자예 (한국항공대학교 항공우주 및 기계공학부) ;
  • 강문중 (국방과학연구소 제4본부 미래추진기술센터) ;
  • 장홍빈 (국방과학연구소 제4본부 미래추진기술센터)
  • 투고 : 2013.08.29
  • 심사 : 2013.10.04
  • 발행 : 2013.09.30
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초록

A flow visualization near submerged nozzle of solid rocket motor was conducted by experiments. A numerical simulation was also performed to reveal detailed phenomena. Radial cold flow simulating hot gas was introduced by a porous grain model which was manufactured by perforated steel plates. The grain model was mounted in high-pressure chamber which has quartz glass at the top of the grain model. From the high-speed images, a rotating vortex was observed and the two type of counter-rotating momentums were generated in numerical results. The rotating momentum was generated at the fin-slot grain because of unbalance between high-velocity flow from slots and low-velocity flow from fin-bases. As a result, roll torques can be produced by the rotating vortex tube.

키워드

References

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