Wave attenuation by multiple slotted barriers with a zig-zag arrangement -A physical and numerical approach

IF 2.4 3区 环境科学与生态学 Q2 ENGINEERING, CIVIL
V. Kumaran , S. Neelamani , K.G. Vijay , N. Al-Anjari , A. Al-Ragum
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引用次数: 2

Abstract

In the present study, scattering of surface gravity waves by multiple slotted vertical barriers arranged in a zig-zag manner is analyzed by employing Computational Fluid Dynamics (CFD) and validated with physical model tests. The porosity of the vertical slotted barrier is varied from 10% to 40%, and the number of slotted barriers varied from 1 to 6. The results from CFD correlate well with the laboratory measurements on the scattering coefficients for a wide range of input conditions giving a high level of confidence. For relatively short waves (h/λ > 0.3, h- water depth and λ- wave length), slotted barriers up to 3 numbers and porosity from 20% to 30% are required to achieve wave transmission coefficient in the range of 0.2 to 0.3. For relatively long waves (h/λ < 0.3), slotted barriers of 5 to 6 numbers and porosity in the range of 10% to 20% are needed to obtain wave transmission of 0.2 to 0.3. The results presented in this study can be used for a wide range of wave damping applications in the field of coastal engineering.

锯齿形排列的多个开槽屏障对波浪的衰减——一种物理和数值方法
本文采用计算流体力学(CFD)方法分析了多个锯齿形开槽垂直屏障对表面重力波的散射,并进行了物理模型试验验证。垂直槽状屏障的孔隙率为10% ~ 40%,槽状屏障的数量为1 ~ 6个。计算流体力学的结果与实验室对大范围输入条件下散射系数的测量结果相吻合,具有较高的置信度。对于相对较短的波(h/λ >0.3 (h-水深,λ-波长)、3个数的槽状屏障、20% - 30%的孔隙度,才能实现0.2 - 0.3的波透射系数。对于相对较长的波(h/λ <0.3),需要5 ~ 6位数的槽状阻隔,孔隙度在10% ~ 20%之间,才能获得0.2 ~ 0.3的波透射率。本研究结果可广泛应用于海岸工程领域的波浪阻尼。
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
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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