Three-dimensional Numerical Evaluation of Hydraulic Efficiency and Discharge Coefficient in Grate Inlets

Q3 Environmental Science

Environmental Research, Engineering and Management Pub Date : 2022-12-12 DOI:10.5755/j01.erem.78.4.31243

Melquisedec Cortés Zambrano, Helmer Edgardo Monroy González, Wilson Enrique Amaya Tequia

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引用次数: 0

Abstract

Floods are one of the causes of ground movement and displacement, and due to rapid urbanization and urban growth may occur more frequently than before. The characteristics of an urban drainage system can define the occurrence and extent of flooding, where catchment elements have a determining role. This document presents the numerical investigation of the hydraulic inlet efficiency and the discharge coefficient of seven types of grate inlets. The FLOW-3D® simulator is used to test the gratings at a full scale, under flow rates of Q = 24, 34.1, 44, 100, 200 and 300 L/s, preserving the configuration of the experimental prototype with longitudinal slopes of 1.0%, 1.5% and 2.0% and a fixed cross slope, for a total of 126 models. Based on the results, hydraulic inlet efficiency curves and discharge coefficients are constructed for each type and a longitudinal slope condition. The results are adjusted with empirical formulations proposed in other investigations, serving to verify the results of physical testing of prototypes.

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篦入口水力效率和流量系数的三维数值计算

洪水是造成地面移动和位移的原因之一，由于快速的城市化和城市增长，洪水可能比以前更频繁地发生。城市排水系统的特征可以确定洪水的发生和程度，其中集水区要素起着决定性作用。本文对7种篦式进水口的水力效率和流量系数进行了数值研究。采用flow - 3d®仿真器，在Q = 24、34.1、44、100、200和300 L/s的流量下，保留了实验原型纵向坡度为1.0%、1.5%和2.0%以及固定横向坡度的配置，共126个模型，对光栅进行了全尺寸测试。在此基础上，构造了各型式和纵向坡度条件下的进口水力效率曲线和流量系数。这些结果与其他研究中提出的经验公式进行了调整，用于验证原型物理测试的结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environmental Research, Engineering and Management Environmental Science-Environmental Engineering

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： First published in 1995, the journal Environmental Research, Engineering and Management (EREM) is an international multidisciplinary journal designed to serve as a roadmap for understanding complex issues and debates of sustainable development. EREM publishes peer-reviewed scientific papers which cover research in the fields of environmental science, engineering (pollution prevention, resource efficiency), management, energy (renewables), agricultural and biological sciences, and social sciences. EREM’s topics of interest include, but are not limited to, the following: environmental research, ecological monitoring, and climate change; environmental pollution – impact assessment, mitigation, and prevention; environmental engineering, sustainable production, and eco innovations; environmental management, strategy, standards, social responsibility; environmental economics, policy, and law; sustainable consumption and education.