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Experimental investigation of leak hydraulics

机译:泄漏液压的实验研究

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摘要

In recent decades the hydraulics of leaks, i.e. the definition of the relationships linking the hydraulic quantities in pipes with leaks, has received increasing attention. On the one hand, the definition of the relationship between the leak outflow and the relevant parameters - e.g. the leak area and shape, the pressure inside the pipe and outside the leak, and the pipe material - is crucial for pressure control and inverse analysis techniques. On the other hand, if the effect of the leakage on the governing equations is not taken into account, i.e. the loss of the flow axial momentum is not considered, significant errors can be introduced in the simulation of water distribution systems. In this paper, the governing equations for a pipe with a leak are derived. The basic equations, obtained within different approaches, are presented in a consistent formulation and then compared with the results of some experimental tests. The leak jet angle and other major features of the results are analysed. The estimated values of the parameters can be used in the water distribution network models when pipes with a diffuse leakage are considered.
机译:在最近的几十年中,泄漏的水力学,即将管道中的液压量与泄漏联系起来的关系的定义受到了越来越多的关注。一方面,定义泄漏量与相关参数之间的关系-例如泄漏面积和形状,管道内部和外部泄漏的压力以及管道材料-对于压力控制和反分析技术至关重要。另一方面,如果不考虑泄漏对控制方程的影响,即,不考虑流动轴向动量的损失,则在配水系统的仿真中会引入明显的误差。本文推导了泄漏管道的控制方程。在不同方法中获得的基本方程式以一致的公式表示,然后与一些实验测试的结果进行比较。分析了泄漏角和结果的其他主要特征。当考虑具有弥散泄漏的管道时,参数的估计值可用于配水管网模型。

著录项

  • 来源
    《Journal of Hydroinformatics》 |2013年第3期|666-675|共10页
  • 作者单位

    Dipartimento di Ingegneria Civile ed Ambientale, University of Perugia, Perugia, Italy;

    Dipartimento di Ingegneria Civile ed Ambientale, University of Perugia, Perugia, Italy;

    Dipartimento di Scienze della Terra e Geologico Ambientali, University of Bologna, Bologna, Italy;

    Dipartimento di Ingegneria Civile ed Ambientale, University of Perugia, Perugia, Italy;

    Dipartimento di Ingegneria Civile ed Ambientale, University of Perugia, Perugia, Italy;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    jet angle; leak; momentum equation;

    机译:喷射角泄漏;动量方程;

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