利用淹没叶片和反坡对水跃特性的实验室研究

IF 2.4 3区 环境科学与生态学 Q2 ENGINEERING, CIVIL
Hamidreza Bagheri , Manouchehr Heidarpour , Farzaneh Noghani
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引用次数: 0

摘要

水跃是一种对河床和水工建筑物下游具有破坏性影响的现象。本研究基于实验结果,提出了一种新的方法,可用于防止水工建筑物下游水跃的有害影响,并设计最佳结构。在这项经验研究中,在一个实验水槽中进行了135个实验,其中攻角为30°和60°的浸没式叶片作为一种新的直观方法,使用两种不同的配置和反向斜率(0、-1.5%和−3%)来控制4.58<;Fr1<;9.14.根据所得结果,随着水下叶片迎角和河床反坡的增加,水跃的后续深度和长度最多分别减少26.6%和31.9%。此外,在φ=60°、d=0.2 m和S=−3%的情况下,能量损失增加了7.7%。为了计算水跃的后续深度和长度,通过分析迎角、反坡和叶片配置的影响,建立了新的方程。然后将所提出的方程得到的所有数据与实验数据进行比较和验证。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Laboratory investigations on hydraulic jump characteristics using submerged vanes and adverse slope

Hydraulic jump is a phenomenon with destructive effects on the river bed and downstream the hydraulic structures. This study, based on experimental findings, presents a new method that can be used to prevent the detrimental impacts of the hydraulic jump downstream of hydraulic structures and to design optimal structures. In this empirical research, 135 experiments were conducted in an experimental flume where submerged vanes with angles of attack of 30 and 60°, as a novel intuitive method, were used with two different configurations and adverse slopes (0, −1.5% and −3%) to control hydraulic jump in the range of 4.58 < Fr1 < 9.14. Based on the obtained results, the sequent depth and length of the hydraulic jump were, at most, decreased by 26.6% and 31.9%, respectively, with increasing the angle of attack of submerged vanes and the adverse slope of the bed. Also, the energy loss increased up to 7.7% in the case of φ = 60°, d = 0.2 m, and S = −3%. To calculate the sequent depth and length of the hydraulic jump, new equations were expressed through the analysis of the effects associated with the angle of attack, adverse slope, and vane configuration. All data resulting from proposed equations were then compared and validated with the experimental data.

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来源期刊
Journal of Hydro-environment Research
Journal of Hydro-environment Research ENGINEERING, CIVIL-ENVIRONMENTAL SCIENCES
CiteScore
5.80
自引率
0.00%
发文量
34
审稿时长
98 days
期刊介绍: The journal aims to provide an international platform for the dissemination of research and engineering applications related to water and hydraulic problems in the Asia-Pacific region. The journal provides a wide distribution at affordable subscription rate, as well as a rapid reviewing and publication time. The journal particularly encourages papers from young researchers. Papers that require extensive language editing, qualify for editorial assistance with American Journal Experts, a Language Editing Company that Elsevier recommends. Authors submitting to this journal are entitled to a 10% discount.
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