Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Study on the Effect of Total Pressure Loss by Bell Mouth Inlet Screen

벨 마우스 흡입구 보호망에 의한 전압력 손실영향 연구

  • Lee, Changwook (Aerospace Engineering Department, Jeonbuk National University) ;
  • Choi, Seong Man (Aerospace Engineering Department, Jeonbuk National University)
  • Received : 2021.04.19
  • Accepted : 2021.11.08
  • Published : 2021.12.31
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Abstract

Bell mouth inlet is applied in various industries due to the advantage of little pressure loss and accurate flow measurement. In this study, the configuration of the bell mouth intake is designed in a long radius shape, and a suitable grid size was selected to minimize the pressure drop and to prevent the engine damage by foreign objects at outdoor operating conditions. It was able to present a modified pressure drop coefficient equation from two data obtained from the computational simulation and experimental results for the total pressure loss by inlet screen installation.

벨 마우스 흡입구는 압력 손실이 거의 발생하지 않으며 정확한 유량 계측이 가능하다는 장점이 있어 다양한 산업에서 적용되고 있다. 본 연구에서는 벨 마우스 흡입구의 벨 형태를 Long radius 형상으로 설계하였고 야외 환경에서 엔진 운용조건에 대해 흡입되는 공기의 압력강하가 발생되는 동시에 외부 물질에 의한 엔진 손상이 발생되지 않는 적합한 보호망의 격자 사이즈를 선정하였다. 보호망 설치로 인한 전압력 손실에 대해 전산 해석 및 실험 결과 획득한 두 가지 데이터 로부터 수정된 압력 강하 계수 방정식을 제시할 수 있었다.

Keywords

Acknowledgement

이 논문은 국방과학연구소가 지원하는 저피탐 무인항공기 추진계통 IR 감소 기술 연구로 수행되었습니다.

References

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