Simulation of a leak's growth process in water distribution systems based on growth functions

Simulation of a leak's growth process in water distribution systems based on growth functions
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基于增长函数的配水系统泄漏增长过程模拟

DOI:
10.2166/aqua.2021.021
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发表时间:
2021-03
影响因子:
1.9
通讯作者:
Wu Xue
Wu Xue
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Guo Guancheng;Liu Shuming;Jia Dailin;Wang Shanhe;Wu Xue

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抽象的。配水系统中的水损失是水务公司面临的主要问题之一。应准确评估水损失的组成部分,并确定其优先次序。一般而言,水平衡分析用于量化水损失的不同组成部分,并确定导致高渗漏率的主要因素。在计算真实的损失期间,假设泄漏流量在给定计算周期内是静态的。在这一过程中,错误是不可避免的。这主要是由于我们对泄漏增长过程的了解有限。为了克服这个问题,目前的工作提出了使用增长函数来表示泄漏的增长过程,并建立泄漏流量和泄漏持续时间之间的函数关系。采用漏失发展模型模拟漏失的发展过程,并对增长函数的参数进行优化。结果表明,理查兹函数的预测效果优于其他生长函数,其平均绝对误差为15.33%。该增长函数可用于计算真实的损失,并具有评价泄漏检测效果的前景。
Abstract. Water loss in water distribution systems is one of the major problems faced by water utilities. The components of water losses should be accurately assessed and their priority should be determined. Generally, water balance analysis is used to quantify different components of water losses and identify the main contributor to high leakage rates. The leak flow rate is assumed to be static within a given calculation period during the calculation of real losses. Errors will inevitably arise during this process. This is mainly due to our limited understanding of a leak's growth process. To overcome this problem, the current work proposes the use of growth functions to represent a leak's growth process and establish a functional relationship between the leak flow rate and the leak duration. A leakage development model is adopted to simulate a leak's growth process and optimize the parameters of growth functions. The results show that the Richards function performs better than other growth functions and its mean absolute percentage error is 15.33%. Furthermore, the growth function could be used to calculate real losses and has the prospect of evaluating the effects of leakage detection.
DOI: 10.2166/aqua.2019.139
发表时间: 2019-06
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