Regular Wave Run-up Attenuation on a Slope by Emergent Rigid Vegetation

2018 ◽  
Vol 35 (3) ◽  
pp. 711 ◽  
Author(s):  
Zegao Yin ◽  
Yanxu Wang ◽  
Xiaoyu Yang
Keyword(s):  
Regular Wave ◽  
Rigid Vegetation ◽  
Run Up

Numerical Investigation of Wave Period Influence on Long Wave Run-Up on Slope With Rigid Vegetation

2016 ◽  
Author(s):  
Jun Tang ◽  
Yongming Shen
Keyword(s):  
Shallow Water Equations ◽  
Water Wave ◽  
Wave Period ◽  
Coastal Vegetation ◽  
Coastal Structures ◽  
Rigid Vegetation ◽  
Comparison With Experiment ◽  
Long Wave ◽  
Nonlinear Shallow Water Equations ◽  
Run Up

Coastal vegetation can not only provide shade to coastal structures but also reduce wave run-up. Study of long water wave climb on vegetation beach is fundamental to understanding that how wave run-up may be reduced by planted vegetation along coastline. The present study investigates wave period influence on long wave run-up on a partially-vegetated plane slope via numerical simulation. The numerical model is based on an implementation of Morison’s formulation for rigid structures induced inertia and drag stresses in the nonlinear shallow water equations. The numerical scheme is validated by comparison with experiment results. The model is then applied to investigate long wave with diverse periods propagating and run-up on a partially-vegetated 1:20 plane slope, and the sensitivity of run-up to wave period is investigated based on the numerical results.

scholarly journals Numerical study of periodic long wave run-up on a rigid vegetation sloping beach

2017 ◽  
Vol 121 ◽  
pp. 158-166 ◽  
Author(s):  
Jun Tang ◽  
Yongming Shen ◽  
Derek M. Causon ◽  
Ling Qian ◽  
Clive G. Mingham
Keyword(s):  
Numerical Study ◽  
Rigid Vegetation ◽  
Long Wave ◽  
Run Up ◽  
Sloping Beach

Numerical Simulation of Wave Overtopping Based on DualSPHysics

2013 ◽  
Vol 405-408 ◽  
pp. 1463-1471 ◽  
Author(s):  
Xing Ye Ni ◽  
Wei Bin Feng
Keyword(s):  
Numerical Simulation ◽  
Vertical Wall ◽  
Breaking Waves ◽  
Numerical Wave Tank ◽  
Regular Wave ◽  
Average Deviation ◽  
Wave Overtopping ◽  
Different Types ◽  
Numerical Wave ◽  
Run Up

To obtain a more detailed description of wave overtopping, a 2-D numerical wave tank is presented based on an open-source SPH platform named DualSPHysics, using a source generation and absorption technology suited for SPH methods with analytical relaxation approach. Numerical simulation of regular wave run-up and overtopping on typical sloping dikes is carried out and satisfactory agreements are shown between numerical results and experimental data. Another overtopping simulation of regular wave is conducted against six different types of seawalls (vertical wall, curved wall, recurved wall, 1:3 slope with smooth face, 1:1.5 slope with smooth face and 1:1.5 slope with stepped-face), which represents the details of various breaking waves interacting with different seawalls, and the average deviation of wave overtopping rate is 6.8%.

scholarly journals Roughness coefficient of polyurethane-bonded revetment

2019 ◽  
Vol 1 (2) ◽  
pp. Manuscript ◽  
Author(s):  
Tanapon Rattharangsri ◽  
Effi Helmy Ariffin ◽  
Nor Aslinda Awang ◽  
Qi Hongshuai
Keyword(s):  
Standard Deviation ◽  
Laboratory Testing ◽  
Roughness Coefficient ◽  
Regular Wave ◽  
Video Cameras ◽  
Wave Basin ◽  
Wave Generator ◽  
Run Up

This article analyzed a roughness coefficient of a polyurethane-bonded revetment (PBR) by laboratory testing. A wave basin was constructed with a regular wave generator installed. Three types of revetment were constructed at the same time in the wave basin. Scales were painted on the revetments. Video cameras were installed to record the wave run-up. Three revetment slopes were tested. The roughness coefficient of the PBR was found to be in the range of 0.632-0.674 with the standard deviation of 0.042-0.053. After the roughness coefficient of the PBR is known, coastal engineers can now design the revetment’s crest elevation with confidence.

Numerical Modeling of Wave Damping Induced by Emerged Moving Vegetation

2020 ◽  
Author(s):  
Aditya Gupta ◽  
Manasa R. Behera ◽  
Amin Heidarpour
Keyword(s):  
Coastal Hazards ◽  
Coastal Vegetation ◽  
Regular Wave ◽  
Coastal Forest ◽  
Wave Damping ◽  
M Wave ◽  
Vegetation Height ◽  
Rigid Vegetation ◽  
Particle Hydrodynamics ◽  
Smoothed Particle

Abstract The unprecedented risk of global warming has put the coastal population at greater risk from coastal hazards due to an increase in sea level and other storm-related activities. Coastal vegetations are one of the soft solutions that can be implemented for wave mitigation. This study aims to investigate the wave damping effect of a regular wave by emergent moving coastal vegetation. Smoothed Particle Hydrodynamics (SPH), a particle-based method is used for generating fluid particles and Differential Variational Inequality (DVI) is coupled with SPH to deal with the dynamics of moving vegetation. The 3-D numerical model is simulated using an open-source tool DualSPHysics 4.4. The model is tested for regular wave height (H) of 0.08 m, wave period (T) of 2 seconds in a water depth (d) of 0.40 and 0.45 m for two relative vegetation height (h/d) of 1.25 and 1.11 respectively. The results are validated with the experimental study for the rigid vegetation and then the model is extended for moving vegetation. The results indicate that the wave damping is overestimated in the case of rigid vegetation. Further, the application of this study can be extended for studying the tsunami hazard mitigation in the presence of coastal forest.

Wave run-up prediction for composite bucket foundation due to regular wave and current

2022 ◽  
Vol 245 ◽  
pp. 110546
Author(s):  
Tongshun Yu ◽  
Zishuai Zhao ◽  
Tingting Zhang ◽  
Zhenyu Zhang ◽  
Jijian Lian ◽  
...  
Keyword(s):  
Regular Wave ◽  
Bucket Foundation ◽  
Run Up

3-D Numerical Modeling of Wave Run-Up on Monopiles

2012 ◽  
Author(s):  
Zhong Peng ◽  
Peter Wellens ◽  
Tim Raaijmakers
Keyword(s):  
Numerical Modeling ◽  
Design Phase ◽  
Regular Wave ◽  
Irregular Wave ◽  
Run Up ◽  
Wave Nonlinearity ◽  
Good Agreement

A 3-D ComFLOW model is used to investigate regular wave and irregular wave run-up on a monopile foundation. ComFLOW model results are in good agreement with measurements of De Vos et al. (2007). Our study shows that the wave run-up is strongly dependent on the wave nonlinearity. A set of non-dimensional, simple formulae have been derived to relate wave run-up to the structure diameter and Ursell number. These new formulae can be used to predict the wave run-up on a monopile foundation in the design phase.

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