Computational fluid dynamics analysis on orifice structure inside valve core of pilot-control angle globe valve

Research output: Contribution to journalArticle


A novel pilot-control angle globe valve is proposed, and it has an obvious advantage of energy conservation during its opening and closing process. In pilot-control angle globe valve, the opening and closing forces are related to the orifice located inside the valve core. In this paper, the effects of orifice diameter are thoroughly studied under different working conditions such as valve core displacements and inlet velocities. To begin with, the numerical model is validated by comparing similar angle valves, and then the flow and loss coefficients under different orifice diameters are discussed. It is found that the effects of orifice diameter on force acting on valve core depend on valve core displacement and inlet velocity. Thus different valve core displacements and inlet velocities combined with different orifice diameters are further studied. It is also found that when the orifice diameter is larger than 12 mm, pilot-control angle globe valve cannot be used under small inlet velocity or large valve core displacement. In addition, formulas to calculate forces on valve core are proposed for further orifice design. This work can be referred in process industries especially in a piping system with orifice plates or globe valves.


  • Zhi Jiang Jin
  • Zhi Xin Gao
  • Ming Zhang
  • Bu Zhan Liu
  • Jin Yuan Qian
External organisations
  • Zhejiang University
  • Hangzhou Worldwides Valve Co., Ltd.
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering


  • Computational fluid dynamics, inlet velocity, loss coefficient, orifice, pilot-control angle globe valve, valve core displacement
Original languageEnglish
Pages (from-to)2419-2429
JournalProceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Issue number13
Early online date2017 Jan 1
Publication statusPublished - 2018
Publication categoryResearch