摘要
为探究弹性管道与黏弹性管道串联混合连接的管道系统瞬变流压力波动的影响规律,设计并搭建了弹性/黏弹性串联混合管道系统瞬变流实验台,分别是镀锌钢管、镀锌钢管与聚丙烯(polypropylene,PPR)管混合管和镀锌钢管与高密度聚乙烯(high density polyethylene,HDPE)管混合管。在不同初始流量情况下,分别对3种管道系统进行了瞬变流实验,基于实验数据,对黏弹性管道瞬变流模型结合一维拟稳态摩阻模型的参数进行校核,并提出了混合管道瞬变流参数校核方法。结果表明:使用黏弹性管道替换部分弹性管道会使得瞬变流压力波峰值衰减幅度下降,钢管/PPR混合管道相比钢管/HDPE混合管道具有更大的下降幅度。此外,应用一维拟稳态摩阻模型可以较准确地模拟混合管道瞬变流的压力波动过程,本文所提出的混合管道瞬变流参数校核方法可简便且准确地校核混合管道瞬变流参数,为工程中混合管道瞬变流的数值计算提供参考依据。
To explore the influence mechanism of transient flow pressure fluctuation in the pipeline system with a mixed connection of elastic pipe and viscoelastic pipe in series,a transient flow test rig of elastic/viscoelastic series mixed pipe system was designed and constructed,including galvanized steel pipe system,galvanized steel/polypropylene pipe mixed pipe system,and galvanized steel/polyethylene pipe mixed pipe system.The transient flow experiments were carried out on three kinds of pipeline systems at different initial flow conditions.Based on the experimental data,the parameters of the transient flow model of viscoelastic pipes combined with one-dimensional quasi-steady friction model are calibrated,and a method of calibrating transient flow parameters in mixed pipelines was proposed.The results show that replacing part of elastic pipe with viscoelastic pipe can reduce the peak value of transient pressure fluctuation,and the steel tube/PPR mixed pipe has a greater decline than the steel tube/HDPE mixed pipe.In addition,the one-dimensional quasi-steady friction model can simulate accurately the pressure fluctuation of mixed pipes.The method proposed in this paper can be used to calibrate the transient flow parameters of the mixed pipes easily and accurately,which provides a certain reference for the numerical calculation of transient flow in the mixed pipeline in engineering.
作者
孙强
王祉皓
伍悦滨
徐莹
SUN Qiang;WANG Zhi-hao;WU Yue-bin;XU Ying(Institute of Artificial Environment Control and Energy Application,School of Civil Engineering,Northeast Forestry University,Harbin 150040,China;School of Architecture(Harbin Institute of Technology),Harbin 150090,China;Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology,Ministry of Industry and Information Technology,Harbin 150090,China;School of Energy and Architecture Engineering,Harbin University of Commerce,Harbin 150028,China)
出处
《科学技术与工程》
北大核心
2023年第2期762-769,共8页
Science Technology and Engineering
基金
中央高校基本科研业务费专项(2572021BJ02)
国家自然科学基金(51808102,51978202)
黑龙江省自然科学基金(LH2019E111,LH2020E028,LH2021E003)
哈尔滨商业大学青年创新人才支持计划(2020CX07)。
关键词
瞬变流
参数校核
本构参数
黏弹性管道
transient flow
parameter calibration
constitutive parameter
viscoelastic pipe
