Transactions of The Korea Fluid Power Systems Society (유공압시스템학회논문집)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Flow Characteristics of the Servo Valve in the Fuel Supply System of APU

보조 동력 장치 연료 공급용 서보밸브의 유동 특성 해석

  • 김성수 (군산대학교 기계자동차공학부) ;
  • 장세영 (군산대학교 기계자동차공학부) ;
  • 정헌술 (군산대학교 기계자동차공학부) ;
  • 류혁 (한국항공우주연구원 KHP 사업팀) ;
  • 이상효 (국방과학연구소)
  • Published : 2008.12.01
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Abstract

In this paper, the authors benchmark a servo valve model for the fuel supply system of Auxiliary Power Unit (APU) in the KHP helicopter. This valve is directly driven with a torque motor, and the size of small gap controlled by a flapper can make change of flow rate under given pressure drop between inlet and outlet. CFD analyses using a commercial code, ANSYS-CFX 10 are performed for the series of three-dimensional models at various openness conditions. The computational results on simplified models show that CFD can play a fine roll in the design of flow path as well as in the estimation of flow force due to its precision and good repeatability. Consequently, the CFD analysis helps valve designers to understand its flow characteristics from the basis of physical fundamentals.

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