Characterising the pressure-leakage response of pipe networks using the FAVAD equation
Characterising the pressure-leakage response of pipe networks using the FAVAD equation
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DOI：
10.2166/ws.2015.101
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
J. Schwaller;J. V. Zyl;A. M. Kabaasha
中科院分区：
文献类型：
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作者：
J. Schwaller;J. V. Zyl;A. M. Kabaasha
本研究调查了使用 FAVAD（固定和可变面积流量）方程（而不是传统的 N1 幂方程）表征配水系统压力泄漏响应的可行性。该研究基于 300 个具有随机分布泄漏的网络模型和通过敏感性分析生成的 35 个网络。研究发现，减压前后的泄漏率和平均区域压头（AZP）可以与FAVAD方程结合使用来估计任何系统的初始泄漏面积（A0S）和头面积斜率（mS）。此外，A0S 和 ms 可以分别对系统中所有单独泄漏的初始面积和头部面积斜率之和提供良好的估计。研究发现，可以计算任何系统的无量纲泄漏数，并用于表征压力泄漏响应。最后，研究表明可以使用一个简单的方程在 N1 和泄漏数之间进行转换。
This study investigated the feasibility of characterising the pressure-leakage response of water distribution systems using the FAVAD (Fixed and Variable Area Discharges) equation, instead of the conventional N1 power equation. The study was based on 300 network models with randomly distributed leaks and 35 networks generated through a sensitivity analysis. It was found that the leakage rate and average zone pressure head (AZP) before and after pressure reduction may be used in conjunction with the FAVAD equation to estimate the initial leakage area ( A0S ) and head-area slope ( mS ) of any system. In addition, A0S and ms were shown to provide good estimates respectively of the sum of the initial areas and head-area slopes of all the individual leaks in the system. The study found that a dimensionless leakage number may be calculated for any system and used to characterise the pressure-leakage response. Finally, the study showed that it is possible to convert between N1 and the leakage number using a simple equation.