Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지

A Pseudo 3-Dimensional Structure of the Liquid-propellant Spray Emerging from Nonimpinging-type Injector

비충돌형 인젝터로부터 발생하는 액체추진제 분무의 준3차원 구조

  • 정훈 (부경대학교 대학원 에너지시스템공학과) ;
  • 김정수 (부경대학교 기계공학과) ;
  • 박정 (부경대학교 기계공학과)
  • Received : 2010.10.09
  • Accepted : 2010.12.05
  • Published : 2010.12.30
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Abstract

This study was performed to make a close inquiry into a pseudo 3-dimensional structure of the liquid-propellant spray emerging from nonimpinging-type injector. Spray configuration near the injector exit was captured by a high-speed camera, and then its periodic phenomena (shedding) was observed. Detailed spatial structure of spray was investigated by spray characteristic parameters (velocity, diameter, volume flux, etc.) with the aid of a Dual-mode Phase Doppler Anemometry (DPDA). Experiment was carried out at various locations along the geometric axis of the nozzle orifice and on the plane normal to the spray stream with the injection pressures of 17.2 to 27.6 bar.

비충돌형 인젝터로부터 발생하는 액체추진제 분무의 준3차원 구조를 규명하기 위한 연구를 수행하였다. 인젝터 출구 근처에서의 분무 형상을 고속카메라를 사용하여 촬영하였고, 인젝터 분무에서 주기적 흘림현상이 관찰되었다. 또, 이중모드 위상도플러속도계(Dual-mode Phase Doppler Anemometry, DPDA)로 분무특성 매개변수(속도, 직경, 부피유속 등)를 측정하여 인젝터 분무의 공간분포 특성을 파악하였다. 본 실험은 분사압력 17.2~27.6 bar의 조건에서 분사축방향 및 확산방향 거리를 변화시키며 수행하였다.

Keywords

References

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