供水管网水龄的逐节点遍历简化算法.docxVIP

Computer Engineering Computer Engineering and Applications计算机工程与应用’ 2009，45(20) 199 供水管网水龄的逐节点遍历简化算法 王永，刘遂庆，信昆仑，王文清 WANG Yong，LIU Sui—qing，XIN Kun—lun，WANG Wen-qing 同济大学环境科学与工程学院，上海200092 Environment Science and Technology School of Tongji University，ShaIlglIai 200092，China E-mail：wangyongtongji@yahoo．com．cn WANG YongtLIU sui-qing．XIN Kun—iun，et aLSimpilfied and junction by junction algorithm to calculate water age in urban water supply and distribution network-Computer Engineering and Applications．2009，45(20)：199-201． Abstract：To calculate the water age in the urban supply and distribution network，a simplified and junction by junction algorithm based the definition of the wator age i．tself i8 designed．Different from the home classical method in which every path from the$OUl℃e the c捌atIId nodes should be pursued and the“Breadth First Search Method”is used．also the gjtme鹏the abroad one“L御gi蚰Transport Algorithm”in which each pipe is divided into several segments and the w岍 age calculation is considered special c咖of the wator quality simulation，the simplified method has lot of advantages， such锄easier modeling．quicker iterating and more accurate msult．So it will be base theory model and good reference do more,complicated calculation and simulation of the pipe network water quality． Key words：water age；wator quality in the pipe metwork；simplified and junction by junction algorithm；breadth first search method；Lagrangian transport algnnthm 摘要：基于水龄的定义，设计逐节点遍历简化算法计算供水管网节点水龄。此法克服了国内传统通过寻找不同的水源到节点的 路径而进行广度优先有哪些信誉好的足球投注网站的算法．以及国外常用的划分管段为若干片段并将水龄作为水质的特例来逐时段模拟的拉格朗日传输 算法的不足，建模简单，运算快速，结果准确，从而为管网水质的进一步计算和模拟提供了基础理论模型与算法参考。 关键词：水龄；管网水质；逐节点遍历简化算法；广度优先有哪些信誉好的足球投注网站；拉格朗日传输算法 DOI：10．37786．issn．1002-8331．2009．20．058 文章编号：1002—8331(2009)20-0199-03‘文献标识码：A 中图分类号：TU991．33 1引言 2传统算法 在供水管网的各项服务中，用户越来越多地开始注重管网 目前国内有学者对于水龄计算的算法采用如式(1)所示模 的水质服务，各供水企业也对管网水质的控制备加重视。水在 型卿： 管网内的停留时间、流速变化等管网水力特性是影响管网水质 ∑口0’彤 主要因素。水在管网中的停留时间是指水从水源节点流至各节 点的流经时间．也被称为节点“水龄”。水龄的长短表明各节点 正=卫}一；NeL∥ (1)