Application of meta-heuristic methods in the optimization of geometrical sections in trapezoidal channels in jump energy loss

IF 2.1 4区 环境科学与生态学 Q2 ENGINEERING, CIVIL
Bahador Fatehi-Nobarian, V. Nourani, Anne Ng
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引用次数: 0

Abstract

Hydraulic jump is of fast altering flow type, within which a subcritical flow transforms into a subcritical flow, and such alteration occurs within a relatively short path of the channel. In the present study, the impact of lateral angles of trapezoidal channel walls in the continuous form on the relative loss of hydraulic jump energy is investigated. For this purpose, the meta-heuristic harmony search algorithm is used for declaring the continuous lateral angles with the range of 45°–75°. With regard to the hydraulic definition for the hydraulic jump phenomenon, the harmony search algorithm, which is widely used for optimization and continuous problems, is considered as a simple concept of a useful algorithm. The results demonstrated the high efficiency of harmony search in the optimization of hydraulic problems. The highest value of jump energy loss up to 81% was recorded for the angle of 45°, implying the high efficiency of this section. As can be clearly seen in the results, the amount of destructive energy loss of hydraulic jump in the meta-heuristic algorithm is significantly higher than other previous methods.
元启发式方法在跳变能量损失下梯形通道几何截面优化中的应用
水跃是一种快速变化的流动类型,在这种变化中,亚临界流转变为亚临界流,这种变化发生在通道的较短路径内。本文研究了连续型梯形沟道壁侧角对水跃能相对损失的影响。为此,使用元启发式和声搜索算法来声明45°-75°范围内的连续侧角。对于水跃现象的水力定义,和声搜索算法被认为是一种概念简单的有用算法,它广泛应用于优化和连续问题。结果表明,和谐搜索在水力问题优化中的效率很高。在45°角处,跳跃能量损失最高,达81%,说明该段效率较高。从结果中可以清楚地看出,元启发式算法的水跃破坏能量损失量明显高于其他方法。
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
4.10
自引率
21.10%
发文量
0
审稿时长
20 weeks
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