Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Flow Visualization in Porous Cylinder with Partial Slots

부분 슬롯을 가진 다공성 실린더의 내부 유동 가시화

  • Son, Min (Graduate School, Korea Aerospace University) ;
  • Kim, Dohun (Graduate School, Korea Aerospace University) ;
  • Koo, Jaye (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Chang, Hongbeen (Advanced Propulsion Technology Center, Agency for Defense Development) ;
  • Kang, Moonjung (Advanced Propulsion Technology Center, Agency for Defense Development)
  • 손민 (한국항공대학교 대학원) ;
  • 김도헌 (한국항공대학교 대학원) ;
  • 구자예 (한국항공대학교 항공우주 및 기계공학부) ;
  • 장홍빈 (국방과학연구소 제4본부 미래추진기술센터) ;
  • 강문중 (국방과학연구소 제4본부 미래추진기술센터)
  • Received : 2014.08.25
  • Accepted : 2014.09.27
  • Published : 2014.09.30
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Abstract

An inner flow of a porous cylinder with partial slots was visualized to study fluidic phenomena in a solid rocket motor. A high-pressure chamber and an air supply system for high flow rate were used. In order to visualize the inner flow, the smoke generator with a cam-driven pump and heaters and high speed camera were adopted. The results of the cylinder type and the partial slot type were compared. As a result, the injected smoke flow in the partial slot type had circumferential fluctuations unlike the cylinder type. It was found that the circumferential flow induced from the partial slots could be the cause of combustion instability and roll torque.

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