管道水锤波速计算方法研究  

STUDY ON CALCULATION METHODS OF WATER HAMMER WAVE VELOCITY IN PIPELINES

作　　者：张奥 孙强[1] 肖童 王祉皓 ZHANG Ao;SUN Qiang;XIAO Tong;WANG Zhihao(Institute of Artificial Environment Control and Energy Application,School of Civil Engineering,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学土木工程学院人工环境与能源控制研究所,哈尔滨150040

出　　处：《低温建筑技术》2022年第11期1-4,21,共5页Low Temperature Architecture Technology

基　　金：国家自然科学基金项目(51808102,51978202);中央高校基本科研业务费专项资金资助项目(2572021BJ02)。

摘　　要：为了探究准确计算管道水锤波速的方法,文中详细阐述了水锤波速的主要影响因素及常用公式,并以不同水温下的低密度聚乙烯(LDPE)管道的水锤实验数据作为依据,验证水锤波速理论计算公式、儒可夫斯基公式以及利用试验数据的波动周期3种水锤波速计算方法的准确性,计算实例表明用儒可夫斯基公式计算的结果与试验结果更接近,另外两种方法在13.8℃和25℃水温时计算结果与试验结果误差较小。因此这3种方法在一定水温范围内对LDPE管道水锤波速计算均有适用性。To explore the method of accurately calculating wave speed of water hammer in pipelines,this paper reviews the main influencing factors and common formulas.Based on the experimental data of water hammer in a lowdensity polyethylene(LDPE)pipeline at different water temperatures,the accuracy of the three methods is evaluated including theoretical calculation formula,Joukowski formula,and the method of using the fluctuation period of the experimental data.The case study shows that the results calculated by the Joukowski formula are closer to the experimental results,and those obtained by the other two methods have a small error at 13.8℃and 25℃water temperatures.Therefore,these three methods are capable of computing water hammer wave speed in LDPE pipeline within a certain water temperature range.

关 键 词：波速 水锤 管道 影响因素 

分 类 号：TU81[建筑科学]