水利水电科技进展2025，Vol.45Issue(3)：32-39,8.DOI:10.3880/j.issn.1006-7647.2025.03.005
排水管网泵群系统动态摩阻水锤仿真模拟
Numerical simulation of water hammer with dynamic friction in pump group systems of drainage pipe networks
摘要
Abstract
Most existing water hammer calculations in drainage pipe networks are based on the assumption of constant friction,neglecting the damping effect of dynamic friction on pressure fluctuations.To address this issue,a dynamic friction water hammer model was developed and solved using the method of characteristics.A water hammer test system was designed to verify the model,and the verified model was used to calculate and analyze an actual complex drainage pipe network with a pump group system.The results indicate that,compared with the conventional constant friction water hammer model,the dynamic friction water hammer model not only accurately simulates the first peak pressure but also precisely simulates the fluctuation peaks and periods of water hammer pressure throughout the entire transient process.For continuous and sustained water hammer events,the cumulative calculation error caused by neglecting dynamic friction cannot be ignored.The installation of air valves can reduce the maximum water hammer pressure by 22.7%and increase the maximum negative pressure in the pipeline by 73%.关键词
排水管网/水力过渡过程/特征线法/动态摩阻/水锤防护Key words
drainage pipe network/hydraulic transient process/method of characteristics/dynamic friction/water hammer protection分类
水利科学引用本文复制引用
舒依娜,刘兆峰,夏修萍,邓朝阳,陆燕清,田永薪,胡垠盈,周领..排水管网泵群系统动态摩阻水锤仿真模拟[J].水利水电科技进展,2025,45(3):32-39,8.基金项目
国电南瑞科技项目(5246C5220001) （5246C5220001）
