Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Study on the Surface Heat Transfer Around a Circular Secondary Jet in the Supersonic Flow

초음속 유동내 원형 2차분사 제트 주변에서의 표면 열전달 현상 연구

  • 이종주 (연세대학교 기계공학부 대학원) ;
  • 유만선 (연세대학교 산업기술연구소) ;
  • 조형희 (연세대학교 기계공학부)
  • Published : 2007.04.30
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Abstract

Convective heat transfer coefficient was measured around a circular secondary jet ejected into the supersonic flow field. The wall temperature measurement around a injection nozzle was conducted using infra-red camera. The constant heat flux is applied to the wall around a secondary nozzle. According to jet to freestream momentum ratio, the injection flow penetrates into the supersonic flow field. The measured temperature is used to calculate the convective heat transfer coefficient.

본 논문에서는 초음속유동장 내에 분사된 2차 분사유동과 주유동의 상호작용에 의한 2차 분사노즐 주변에서의 열전달 현상을 관찰하였다. 벽면에는 등열유속조건을 주었다. 제트 자유유동간 운동량비(Jet to Freestream Momentum Ratio, J)에 따라 2차 분사를 초음속 유동장에 분사시켰으며, 적외선 카메라를 이용하여 2차 분사노즐 주변 벽면온도를 측정하였고, 이를 통하여 대류 열전달계수를 제시하였다.

Keywords

References

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