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Functional performance of modular porous reef breakwaters
Journal of Hydro-environment Research ( IF 2.8 ) Pub Date : 2019-08-07 , DOI: 10.1016/j.jher.2019.07.006
V.K. Srineash , K. Murali

Reef breakwaters are submerged structures usually made out of rubble mound construction. Wave attenuation could be achieved off-shore by the introduction of such reef breakwaters. This offshore wave attenuation helps to protect a coast subjected to erosion. Such submerged structures are suitable when moderate wave transmission is acceptable on the lee side of the structure. This present work aims at providing a basis for the design of reef breakwaters using results from physical model tests. The hydrodynamic performance characteristics of the reef breakwaters, namely the transmission and reflection coefficients are examined in the study for varying wave parameters and geometric configurations of the reef. Further, the present experiments have helped shed light on Reef Induced wave Breaking (RIB) and its role in the hydrodynamic performance of the reef breakwater. The present investigations bring out those parameters which are involved in RIB so that a designer would be able to identify and provide-for the RIB. Design equations for prediction of transmission and reflection coefficients for submerged porous reef breakwaters in regular and random waves are proposed and compared with other such equations. It is shown that the present equations reproduce dependence of hydrodynamic performance on reef and wave parameters.



中文翻译:

模块化多孔礁防波堤的功能性能

礁石防波堤是通常由瓦砾堆构造制成的淹没结构。通过引入这种礁石防波堤,可以在近海实现波浪衰减。这种近海波衰减有助于保护遭受侵蚀的海岸。当在结构的背风侧可接受适度的波透射时,这种淹没结构是合适的。本工作旨在为使用物理模型试验结果设计礁石防波堤提供基础。在研究礁石的波浪参数和几何构型变化的过程中,研究了礁石防波堤的水动力性能特征,即透射和反射系数。此外,目前的实验有助于阐明礁石诱发的波浪破碎(RIB))及其在礁石防波堤的水动力性能中的作用。目前的研究得出了RIB中涉及的那些参数,以便设计人员能够识别并提供RIB。提出了用于预测规则波和随机波中的水下多孔礁防波堤的透射和反射系数的设计方程,并将其与其他此类方程进行比较。结果表明,本方程再现了水动力性能对礁石和波浪参数的依赖性。

更新日期:2019-08-07
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