河海大学学报（自然科学版）2026，Vol.54Issue(1)：43-52,10.DOI:10.3876/j.issn.1000-1980.2026.01.006
输水管道水锤-泄漏耦合数值模拟及反射系数特性研究
Numerical simulation of water hammer and leak coupling in water pipelines and study on reflection coefficient characteristics
摘要
Abstract
To address the challenge of leak detection and localization in water pipelines for long-distance water supply projects,a test system for water hammer and leak was designed and constructed.Moreover,a numerical model of water hammer and leak coupling considering dynamic friction and viscoelastic effects was established to achieve accurate transient pressure simulation.An analytical model for leak reflection and transmission coefficients was proposed to investigate the influencing parameters of these coefficients,and an experimental system was designed to verify the model's accuracy.The results of experiments and model analyses indicate that the leak location is positively correlated with the occurrence time of the pressure drop peak;as the number of leak holes increases,the pressure drop shows a"stepwise"increase,and the transient pressure attenuation rate accelerates;the energy dissipation of water hammer waves caused by dynamic friction reduces the reflection coefficient compared to the frictionless condition;the actual wave velocity of viscoelastic pipelines is lower than the theoretical calculation value,leading to an overestimation of the reflection coefficient.关键词
输水管道泄漏/瞬态流/水锤/动态摩阻/黏弹性管道/泄漏反射系数Key words
water pipeline leak/transient flow/water hammer/dynamic friction/viscoelastic pipeline/leak reflection coefficient引用本文复制引用
周领,王鹤鸣,徐彬,李赟杰,潘天文..输水管道水锤-泄漏耦合数值模拟及反射系数特性研究[J].河海大学学报（自然科学版）,2026,54(1):43-52,10.基金项目
宁波市重大专项"科创甬江2035"关键技术项目(2024Z285) （2024Z285）
青海省2025年中央引导地方科技发展资金专项(2025ZY040) （2025ZY040）
国家自然科学基金项目(52209084) （52209084）
