不同通道对迷宫堰流量系数的影响

IF 0.8 4区工程技术 Q4 ENGINEERING, CIVIL

Teknik Dergi Pub Date : 2021-07-01 DOI:10.18400/tekderg.629128

R. Daneshfaraz, A. Ghaderi, J. Abraham, M. Torabi

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引用次数: 4

摘要

本文利用FLOW-3D模型，数值研究了河床坡度和非棱形收敛河道对迷宫堰流量系数的影响。数值模拟结果表明，两种方法对迷宫式堰道的修正均能提高流量系数。在选择的河床坡度和河道壁面中，坡度为β=4%、角度为θ=10°时流量系数最高。当HT/P=0.1时(HT:流高，P:堰高)，床坡和会聚角情况下的流量系数和流量率分别比常规迷宫式堰高19.22%、23.9%和22.28%，分别高25.91%。同时施加河床坡度和辐合角显著提高了流量系数和流量值，比常规情况分别提高了28.64%和30.42%。因此，改变堰道的河床坡度和墙角会增加这种类型堰的流量系数，在堰设计中应考虑这些设计变化。

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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Effect of Different Channels on Discharge Coefficient of Labyrinth Weirs

In this study, the effect of channel-bed slope and non-prismatic converging channel on the discharge coefficient of labyrinth weirs is numerically investigated utilizing FLOW-3D model. Numerical simulation results show that modifying the labyrinth weir channel through both methods improves the discharge coefficient. Among the selected bed slopes and converging channel wall, the slope of β=4% and angle of θ=10° yielded the highest discharge coefficient. For a ratio HT/P=0.1, (HT: flow height, P: weir height) the discharge coefficient and discharge rate for bed slope and convergence angle case were 19.22%, 23.9% and 22.28%, 25.91% higher than for a conventional labyrinth weir in prismatic channel, respectively. Simultaneous application of a bed slope and convergence angle significantly increases the discharge coefficient and discharge value case were 28.64% and 30.42% higher than compared to the conventional case. Therefore, changing the bed slope and wall angle of the weir channel increases the discharge coefficient and in this type of weir and these design alterations should be considered in weir design.

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来源期刊

Teknik Dergi 工程技术-工程：土木

自引率

30.80%

发文量

审稿时长

>12 weeks

期刊介绍： The scope of Teknik Dergi is naturally confined with the subjects falling in the area of civil engineering. However, the area of civil engineering has recently been significantly enlarged, even the definition of civil engineering has somewhat changed. Half a century ago, engineering was simply defined as “the art of using and converting the natural resources for the benefit of the mankind”. Today, the same objective is expected to be realised (i) by complying with the desire and expectations of the people concerned and (ii) without wasting the resources and within the sustainability principles. This change has required an interaction between engineering and social and administrative sciences. Some subjects at the borderline between civil engineering and social and administrative sciences have consequently been included in the area of civil engineering. Teknik Dergi defines its scope in line with this understanding. However, it requires the papers falling in the borderline to have a significant component of civil engineering.