基于城市供水管网变态物理模型的管网试验研究  

Simulation tests of municipal water distribution system based on distorted physical model

作　　者：张新波[1,2] 贾辉[3] 王捷[3] 陈杰[4] 

机构地区：[1]天津城建大学环境与市政工程学院,天津300384 [2]天津市水质科学与技术重点实验室,天津300384 [3]天津工业大学环境与化学工程学院,天津300387 [4]天津大学环境科学与工程学院,天津300072

出　　处：《天津工业大学学报》2013年第3期61-65,共5页Journal of Tiangong University

基　　金：国家自然科学基金项目(50908161);天津市水质科学与技术重点实验室开放研究基金资助项目(TJKLAST-2011-12);天津市建交委(2009-20)

摘　　要：建立供水管网物理模型进行水力模拟试验有助于深入研究实际供水管网系统水力特性.基于有压管流相似理论和供水管网水力特性,推导构建了供水管网的变态物理模型;对管网进行了受力分析和相似模型推导,得到了物理模型与管网原型主要物理指标之间的关系;对实例管网进行简化并变态微缩后,进行了模型管网试验.试验计算结果表明:模型与原型管网实际运行在沿程水损的模拟相对误差均低于20%,显示了变态相似理论对管段水力特性的模拟的可行性,模型可以有效地反映原型水力特性.Developing an experimental model of water distribution network is contributed to study the hydraulic properties of the actual network.According to similarity theory of pressure flow and the hydraulic characteristics of water distribution system,the distorted hydraulic model is done,and the principal physical indicators between water distribution system and its distorted physical model are deduced.The distorted physical model of a practical water distribution system is made to testify the similarity theory in lab.The relative errors of frictional head loss are less than 20% between the water distribution system and its distorted physical model,which proves similarity theory applied to simulate pipe network hydraulic characteristics practical,and reflects the hydraulic properties of the actual network effectively.

关 键 词：供水管网 变态模型 模拟 相似理论 

分 类 号：TU821.3[建筑科学]