Experimental Simulation of Interaction Between Weir – Gate Hydraulic Structure and Dikes

Q1 Engineering
Rafi Mohammed Qasim, Ihsan Abdulkareem Abdulhussein, Khalid Al-Asadi
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引用次数: 0

Abstract

Several experimental runs have been conducted in a rectangular flume in order to investigate the effect of composite hydraulic structures and emerged dikes on flow hydraulic characteristics. The composite hydraulic structures used in this study are composed of a rectangular weir and gate with a different dimensional model. The dikes' structure is simulated by wood sheets of 10 cm height with two lengths, 1.0 and 1.5 cm. Three dike arrangements have been adopted in this study and installed downstream of the composite hydraulic structure. These arrangements consist of one side, both sides, and zigzag arrangement. Each dike arrangement has three cases with different dike numbers and spacing values. All the experiments have satisfied the submerged flow condition. The investigation of the flow cross-sectional area that passes the gate and weir of the composite structure and the dike arrangements, numbers, and lengths have been observed to find their effects on downstream average water depth, actual discharge, discharge coefficient of the composite structure, upstream and downstream Froude numbers, and downstream Reynolds number. The main finding in this study is that the existence of dikes downstream of the composite structure causes an increase in the downstream water depth without any conflict or fluctuation in the workability of the composite hydraulic structure. This study shows reasonable and noticeable results for Froude number, flow velocity, head losses, and water surface profile with distance in the downstream region. The experimental work is supported by adopting the statistical test to inspect the suitability and the acceptability of the average downstream water depth. It is strongly stated that all the observed data follow the normal distribution.
堰闸水工结构与堤防相互作用试验模拟
在矩形水槽中进行了多次试验,研究了复合水工结构和出堤对水流水力特性的影响。本研究中采用的组合水工结构是由一个矩形堰和一个不同尺寸模型的闸门组成。堤防结构采用高10cm、长1.0 cm和1.5 cm的木板模拟。本研究采用三种堤防布置方式,安装在组合水工构筑物的下游。这些排列由单侧、两侧和之字形排列组成。每一种堤防排列都有三种不同堤防数目和间距值的情况。所有试验均满足水下流动条件。考察了复合结构通过闸、堰的水流截面积和堤防布置、堤数、堤长对下游平均水深、实际流量、复合结构流量系数、上下游弗劳德数、下游雷诺数的影响。本研究的主要发现是复合水工构筑物下游堤防的存在使下游水深增加,但复合水工构筑物的可工作性没有冲突和波动。本研究对下游区域的弗劳德数、流速、水头损失、水面剖面随距离的变化得出了合理且显著的结果。采用统计检验检验下游平均水深的适宜性和可接受性,为实验工作提供了支持。必须申明所有观测到的数据都服从正态分布。
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
CiteScore
2.90
自引率
0.00%
发文量
34
期刊介绍: The International Review of Civil Engineering (IRECE) is a peer-reviewed journal that publishes original theoretical papers, applied papers, review papers and case studies on all fields of civil engineering. The scope of the Journal encompasses, but is not restricted to the following areas: infrastructure engineering; transportation engineering; structural engineering (buildings innovative structures environmentally responsive structures bridges stadiums commercial and public buildings, transmission towers, television and telecommunication masts, cooling towers, plates and shells, suspension structures, smart structures, nuclear reactors, dams, pressure vessels, pipelines, tunnels and so on); earthquake, hazards, structural dynamics, risks and mitigation engineering; environmental engineering; structure-fluid-soil interaction; wind engineering; fire engineering; multi-scale analysis; constitutive modeling and experimental testing; construction materials; composite materials in engineering structures (use, theoretical analysis and fabrication techniques); novel computational modeling techniques; engineering economics. The Editorial policy is to maintain a reasonable balance between papers regarding different research areas so that the Journal will be useful to all interested scientific groups.
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