MMM
YYYY
Hydrodynamic Coefficient Investigation on a Partial Permeable Stepped Breakwater Under Regular Waves
规则波作用下部分透水阶梯式防波堤的水动力系数研究
規則的な波の下での部分的に透過性の階段状防波堤に関する流体力学的係数の調査
규칙파하 부분투수계단식 방파제에 대한 유체역학계수 조사
Investigación del coeficiente hidrodinámico en un rompeolas escalonado parcialmente permeable bajo olas regulares
Etude du coefficient hydrodynamique sur un brise-lames à gradins partiellement perméable sous des vagues régulières
Исследование гидродинамических коэффициентов на частично проницаемом ступенчатом волнорезе при регулярных волнах
Zegao Yin 尹则高 ¹ ², Zihan Zheng 郑子涵 ¹, Ning Yu 于宁 ¹, Haojian Wang ¹
¹ Engineering College, Ocean University of China, Qingdao, 266100, China
中国 青岛 中国海洋大学工程学院
² Shandong Province Key Laboratory of Ocean Engineering, Ocean University of China, Qingdao, 266100, China
中国 青岛 中国海洋大学山东省海洋工程重点实验室
Journal of Ocean University of China, 21 November 2021
Abstract

Traditional breakwater takes the advantage of high protection performance and has been widely used. However, it contributes to high wave reflection in the seaside direction and poor water exchange capacity between open seawater and an inside harbor. Consequently, a partially permeable stepped breakwater (PPSB) is proposed to ensure safety and good water exchange capacity for an inside harbor, and a 3-D computational fluid dynamics (CFD) mathematical model was used to investigate the hydrodynamic coefficients using Reynolds-Averaged Navier-Stokes equations, Re-Normalization Group (RNG) k-ε equations, and the VOF technique.

A series of experiments are conducted to measure the wave heights for validating the mathematical model, and a series of dimensionless parameters considering wave and PPSB effects were presented to assess their relationships with hydrodynamic coefficients, respectively. With the increase in the reciprocal value of PPSB slope, incident wave steepness and permeable ratio below still water level (SWL), the wave reflection coefficient decreases. The wave transmission coefficient decreases with an increase in the reciprocal value of the PPSB slope and incident wave steepness; however, it increases with the increase in the permeable ratio below SWL.

With increases in the reciprocal value of the PPSB slope, permeable ratio below SWL and incident wave steepness for relatively high wave period scenarios, the wave energy dissipation coefficient increases; however, it decreases slightly with increases in the incident wave steepness for the smallest wave period scenarios. Furthermore, simple prediction formulas are conducted for predicting the hydrodynamic coefficients and they are well validated with the related data.
Journal of Ocean University of China_1
Journal of Ocean University of China_2
Journal of Ocean University of China_3
Reviews and Discussions
https://www.hotpaper.io/index.html
Spin-dependent amplitude and phase modulation with multifold interferences via single-layer diatomic all-silicon metasurfaces
Highly sensitive laser spectroscopy sensing based on a novel four-prong quartz tuning fork
A novel approach towards robust construction of physical colors on lithium niobate crystal
Multi-photon neuron embedded bionic skin for high-precision complex texture and object reconstruction perception research
Single-beam optical trap-based surface-enhanced raman scattering optofluidic molecular fingerprint spectroscopy detection system
High-frequency enhanced ultrafast compressed active photography
Efficient generation of vectorial terahertz beams using surface-wave excited metasurfaces
High-efficiency RGB achromatic liquid crystal diffractive optical elements
On-chip light control of semiconductor optoelectronic devices using integrated metasurfaces
Ferroelectric domain engineering of lithium niobate
Smart reconfigurable metadevices made of shape memory alloy metamaterials
Direct detection with an optimal transfer function: toward the electrical spectral efficiency of coherent homodyne detection



Previous Article                                Next Article
About
|
Contact
|
Copyright © Hot Paper