球阀瞬态关闭过程及水锤现象无网格法数值研究

贾智博; 孙一颉; 周子棋; 孙中国; 席光

doi:10.7652/xjtuxb202602020

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球阀瞬态关闭过程及水锤现象无网格法数值研究

更新时间：2026-02-09

- 球阀瞬态关闭过程及水锤现象无网格法数值研究
- Meshless Numerical Study of Transient Closing Process in Ball Valves and Associated Water Hammer Phenomenon
- 西安交通大学学报 2026年60卷第2期页码：207-217
- 作者机构：
  
  西安交通大学能源与动力工程学院，710049，西安
- 作者简介：
  
  作者简介：贾智博（2001—），男，硕士生；
  孙中国（通信作者），男，教授，博士生导师。
- 基金信息：
  
  中国博士后科学基金资助项目(GZB20240596);陕西省自然科学基础研究计划资助项目(2025JC-YBQN-574);光合基金A类项目。(202407014748)
- DOI：10.7652/xjtuxb202602020
  中图分类号： TH137.52+2
- 收稿：2025-06-23，
  
  纸质出版：2026-02-10
- 稿件说明：
移动端阅览
贾智博, 孙一颉, 周子棋, 等. 球阀瞬态关闭过程及水锤现象无网格法数值研究[J]. 西安交通大学学报, 2026,60(2):207-217.

JIA Zhibo, SUN Yijie, ZHOU Ziqi, et al. Meshless Numerical Study of Transient Closing Process in Ball Valves and Associated Water Hammer Phenomenon[J]. Journal of Xi'an Jiaotong University, 2026, 60(2): 207-217.
贾智博, 孙一颉, 周子棋, 等. 球阀瞬态关闭过程及水锤现象无网格法数值研究[J]. 西安交通大学学报, 2026,60(2):207-217. DOI： 10.7652/xjtuxb202602020.

JIA Zhibo, SUN Yijie, ZHOU Ziqi, et al. Meshless Numerical Study of Transient Closing Process in Ball Valves and Associated Water Hammer Phenomenon[J]. Journal of Xi'an Jiaotong University, 2026, 60(2): 207-217. DOI： 10.7652/xjtuxb202602020.

摘要

针对传统网格法在模拟球阀瞬态关闭过程中存在的网格畸变、数值不稳定及交界面误差等问题，基于移动粒子半隐式法（MPS），提出了一种高精度、稳定压力进/出口边界模型，并对球阀的关闭过程进行了瞬态数值模拟，得到了球阀从全开至全关过程中进/出口压差、流量系数和流阻系数随开度的变化规律，结合不同开度下的速度场与压力场，揭示了流动分离、涡流生成及水锤现象等非定常流动机理。结果表明：阀门进/出口压差随着阀门开度的减小呈先增大后减小非线性趋势；流量系数在开度大于70°时变化平缓，开度小于70°后急剧下降；流阻系数在开度大于45°时变化缓慢，开度小于45°后显著升高；随着开度不断减小，出口和阀芯流道内形成漩涡并不断扩大，动能耗散加剧；阀前高压区与阀后低压区共存，阀芯内流体接近滞止导致静压堆积；关阀水锤压力表现出先增大后减小的变化趋势，随着关阀时间的延长，最大水锤压力逐渐降低。研究结果可为球阀的设计和优化提供一定的理论支持，对提升管道系统安全性与稳定性具有参考意义。

Abstract

To address the issues of mesh distortion，numerical instability，and interface errors encountered when traditional mesh-based methods are used to simulate the transient closing process of ball valves，a high-accuracy and stable pressure inlet/outlet boundary model based on the moving particle semi-implicit（MPS）method is proposed.Transient numerical simulation of the ball valve closing process was carried out，and the variations of the inlet/outlet pressure difference，flow coefficient，and flow resistance coefficient with the opening degree during the process from fully open to fully closed were obtained.By analyzing the velocity and pressure fields at different opening degrees，unsteady flow mechanisms such as flow separation，vortex generation，and water hammer phenomenon were revealed.The results show that the inlet/outlet pressure difference across the valve first increases and then decreases nonlinearly as the opening decreases.The flow coefficient changes gradually when the opening is greater than 70°，but drops sharply when the opening is less than 70°.The flow resistance coefficient changes slowly when the opening is greater than 45°，but increases significantly when the opening is less than 45°.As the opening decreases further，vortices form and expand in the outlet and the valve core flow passage，leading to intensified kinetic energy dissipation.A high-pressure zone in front of the valve coexists with a low-pressure zone behind the valve，and the fluid in the valve core approaches stagnation，resulting in static pressure accumulation.The water hammer pressure during valve closing first increases and then decreases；as the closing time increases，the maximum water hammer pressure gradually decreases.The results provide theoretical support for the design and optimization of ball valves and offer reference for improving the safety and stability of pipeline systems.

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