摘要：Water hammer poses a significant concern in the transportation of pipelines and pipe networks. Due to the passage of reflection of water hammer waves at nodes, a large number of high-frequency pressure fluctuation signals appear in the pipe network, demanding an intensive computational workload. A novel hybrid method based on characteristic lines and equivalent circuits is proposed for the accurate and fast simulation of pipe networks. Multiple methods are employed for the simulation of pipelines and pipe networks, followed by a comparative analysis. The accuracy of the hybrid method is validated by comparing the proposed method with simulation results of commercial software. The hybrid method reduces the significant computational workload inherent in the classic method of characteristics and enhances the accuracy at high frequencies in the state-of-the-art elastic water column model. A trade-off between simulation accuracy and computation speed is achieved by adjusting the time step. The accuracy of calculating higher-frequency pressure fluctuations is further validated with an increase in the pipe diameter and a corresponding reduction in the friction loss. Generally, this method enables the simultaneous descriptions of high-frequency characteristics and nonlinear friction loss, enhancing calculation speed with little impact on the accuracy. The results demonstrate that the proposed model can be utilized for the transient analysis of pipe networks, providing support for predicting system performance and designing optimal strategies. ? 2024 Elsevier B.V.

ISSN号：2949-8910

卷、期、页：卷239

发表日期：2024-08-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Geoenergy Science and Engineering

参与作者：沈青

通讯作者：刘鹏

第一作者：宫敬,史博会,宋尚飞

论文类型：期刊论文

论文概要：刘鹏,宫敬,史博会,宋尚飞,沈青，Hybrid method for hydraulic transient analysis of liquid pipe networks based on characteristic lines and equivalent circuits，Geoenergy Science and Engineering，2024，卷239

论文题目：Hybrid method for hydraulic transient analysis of liquid pipe networks based on characteristic lines and equivalent circuits