水利水电科技进展2026，Vol.46Issue(2)：84-90,7.DOI:10.3880/j.issn.1006-7647.2026.02.011
基于动态气囊边界改进的空气阀模型
An improved air valve model based on dynamic air-pocket boundaries
摘要
Abstract
Conventional air valve models usually fix the air pocket at the air valve node and neglect boundary movement caused by pocket volume variation during air intake and discharge,which may lead to pressure calculation errors at adjacent nodes.To overcome this limitation,an improved air valve model,namely the spreading air valve model,is proposed.This model updates the air-pocket boundary position in real time according to the variation in air-pocket volume,so that the motion of the water-air interface is more consistent with the actual physical process.By coupling the gas state equation with the fluid governing equations,the dynamic and simultaneous solution of air-pocket pressure,volume and mass is realized.Validation results from a pressurized water pipeline project show that the spreading air valve model can effectively simulate the hydraulic transient process,reasonably predict water column separation and water hammer pressure variation,and significantly improve the accuracy and reliability of water hammer protection design for pipeline systems.关键词
空气阀模型/气囊边界/水柱分离/水力过渡过程Key words
air valve model/air pocket boundary/water column separation/hydraulic transient process引用本文复制引用
赵莉,杨晓春,颜建国,申虎贲..基于动态气囊边界改进的空气阀模型[J].水利水电科技进展,2026,46(2):84-90,7.基金项目
国家自然科学基金面上项目(52579076) （52579076）
陕西省自然科学基础研究计划项目(2022JM-211) （2022JM-211）
西安市科技局高校院所人才服务企业项目(23GXFW0039) （23GXFW0039）
陕西省创新能力支撑计划项目(2024RS-CXTD-31) （2024RS-CXTD-31）
陕西省技术创新引导计划项目(2024QCY-KXJ-050) （2024QCY-KXJ-050）
