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Flow Analysis and Experimental Study of Globe Valve for Precision Control

정밀 제어 글로브 밸브의 유동해석 및 실험적 연구

  • Choi, Ji-Won (Department of Mechanical Engineering, Dong-A University) ;
  • Park, Sun-Hyung (Department of Mechanical Engineering, Dong-A University) ;
  • Lee, Kwon-Hee (Department of Mechanical Engineering, Dong-A University)
  • Received : 2016.05.04
  • Accepted : 2016.07.07
  • Published : 2016.07.31

Abstract

The globe valve is a linear motion valve that is designed primarily to stop, start, and regulate flow. The disk of a globe valve can be removed totally from the flow path or it can completely close the flow path. In this study, numerical analysis using ANSYS-CFX was initially performed to predict the flow coefficient and build a prototype model of a globe valve. The flow coefficient is the volume of water at $15.6^{\circ}C$ that will flow per minute through a valve with a pressure drop of 1 psi across the valve. In other words, it is an important factor for determining the size of the valve. From the analysis results, the fluid flux of water and flow coefficient of the valve were extracted. From the numerical results, a prototype of ultra-fine precision control valve, which can regulate the fluid flow of range 0 ~ 0.1 gal per min, was developed. The experimental results were compared with the numerical results using the flow coefficient ($C_v$) graph. From the comparative results, the flow coefficient ($C_v$) error percentage between the numerical and experimental results was very low, which is acceptable, proving that the proposed prototype model is convincing. In addition, it is possible to predict the flow coefficient using only numerical analysis.

Acknowledgement

Grant : 지역연고산업육성

Supported by : 동아대학교 산학협력단

References

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