Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Steady/Unsteady Cavitating Flow Analysis of Pilot Valve in Flight Actuator System Using Dynamic Moving Mesh

Dynamic Moving Mesh 기법을 이용한 비행조종작동기 제어용 파일럿 밸브 내부 정상/비정상 캐비테이션 유동 해석

  • 손갑식 (한양대학교 기계공학과 대학원) ;
  • 이세욱 (한양대학교 기계공학과 대학원) ;
  • 김대현 ((주)한화 항공우주/기계연구소) ;
  • 김상범 ((주)한화 항공우주/기계연구소) ;
  • 박상준 ((주)한화 항공우주/기계연구소) ;
  • 장기원 ((주)한화 항공우주/기계연구소) ;
  • 조진수 (한양대학교 기계공학부)
  • Received : 2011.03.10
  • Accepted : 2011.06.08
  • Published : 2011.07.01
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Abstract

A numerical analysis of steady/unsteady flow applying cavitation model and moving mesh method was carried out in order to analyze flow and response characteristics inside the pilot valve which controls the flight actuator system. The flow of the valve was assessed according to operation temperature and time. This research has found that valve characteristics became stable at above a specific temperature and the cavitation affected valve's performance. Internal pressure and response characteristics of the valve were analyzed and flow characteristics of steady and developed unsteady flow were confirmed to be matched each other.

비행조종작동기 제어용 파일럿 밸브의 내부 유동 및 응답 특성을 분석하기 위해 캐비테이션 모델과 격자 이동 기법을 사용하여 정상/비정상 유동의 수치 해석을 수행하였다. 작동 온도와 시간에 따른 밸브 내부 유동을 분석한 결과, 일정 온도 이상에서 밸브 특성이 안정되는 현상을 발견하였고 캐비테이션이 밸브 성능에 미치는 영향성을 파악하였다. 밸브 내부 압력과 응답 특성을 분석하였으며 비정상 유동이 발달하여 정상 유동 특성과 일치하는 것을 확인하였다.

Keywords

References

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