排灌机械工程学报2024，Vol.42Issue(1)：37-42,6.DOI:10.3969/j.issn.1674-8530.22.0237
有机玻璃管道直接水锤压力特性试验研究
Experimental study on direct water hammer pressure characteristics in PMMA pipelines
摘要
Abstract
To understand the water hammer pressure characteristics of viscoelastic pipelines,a series of shut-off valve water hammer tests were conducted by construction of a reservoir-pipeline-valve sys-tem model.The direct water hammer pressure change law generated by the shut-off valve for the Poly-methyl Methacrylate(PMMA)pipeline at the initial opening were 30％,100％of the end valves were studied.From the perspective of the constitutive relationship of viscoelastic materials,the influence mechanism of valve closing time on the direct water hammer of viscoelastic materials was analyzed.The 3D numerical simulations were conducted on the flow field at two different initial openings near the valve.The results show that the variation of direct water hammer pressure in viscoelastic pipelines is in-consistent with traditional water hammer theory.Direct water hammer pressure is related to the valve closing time and the valve initial opening time.The laws of"The faster the valve closes,the greater the direct water hammer pressure"and "The smaller the initial opening of the valve,the greater the direct water hammer pressure"are met.关键词
黏弹性管道/直接水锤/关阀时间/阀门开度/试验研究Key words
viscoelastic pipeline/direct water hammer/valve closing time/valve opening/experimental study分类
农业科技引用本文复制引用
张小莹,边少康,冯梦雪,陆伟,张健..有机玻璃管道直接水锤压力特性试验研究[J].排灌机械工程学报,2024,42(1):37-42,6.基金项目
新疆维吾尔自治区自然科学青年基金资助项目(2021D01B57) （2021D01B57）
新疆维吾尔自治区重大科技专项(2022A02003-4) （2022A02003-4）
国家自然科学基金资助项目(52179062,51879087) （52179062,51879087）
