Journal ArticleDOI
Effect of vegetation on run-up and wall pressures due to cnoidal waves
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In this article, the effect of vegetation on attenuating run-up over a plane slope of 1 : 30 due to the propagation of cnoidal waves was investigated. But the authors focused on the vertical wall fronted by two vegetation types, namely tandem and staggered vegetation.Abstract:
A comprehensive experimental investigation was carried out to understand the effect of vegetation in attenuating run-up over a plane slope of 1 : 30 due to the propagation of cnoidal waves. Two different types of vegetation configurations, namely tandem and staggered, are considered. Dynamic pressures exerted along a vertical wall fronted by these two vegetation types were measured, and the typical variation of dimensionless peak pressures for different relative depths of submergence of the pressure ports is reported as a function of dimensionless parameters involving the vegetation and wave characteristics. Further, typical results on the variation of the dimensionless peak run-up versus the surf similarity parameter only for the staggered configuration are also herein reported. Finally, the percentage reduction in wave run-up and pressures on the wall due to the presence of wall fronted by vegetation are reported.read more
Citations
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Journal ArticleDOI
Effects of different forest cover configurations on reducing the solitary wave-induced total sediment transport in coastal areas: An experimental study
TL;DR: In this paper, the effects of long waves as simulated solitary waves on sediment transport to estimate the sediment transport rate in different coastal forest cover (CFC) densities were studied.
Book ChapterDOI
Effect of Emerged Coastal Vegetation on Wave Attenuation Using Open Source CFD Tool: REEF3D
H. S. Arunakumar,Praveen S. Suvarna,P. A. Abhijith,Ashwin S. Prabhu,U. Pruthviraj,Arun Kamath +5 more
TL;DR: In this paper, an artificial, rigid, emerged vegetation for a length of 2 m is developed in a numerical wave tank of REEF3D. The model is tested for regular waves of height 0.08, 0.12, and 0.16 m and wave periods of 1.8 and 2 s in a water depth of 0.45 m.
Journal ArticleDOI
A comprehensive review on structural tsunami countermeasures
Jan Oetjen,Vallam Sundar,Sriram Venkatachalam,Klaus Reicherter,Max Engel,Holger Schüttrumpf,S. A. Sannasiraj +6 more
TL;DR: In this paper , the authors evaluated the efficacy of hard and soft countermeasures for tsunami impacts through a comprehensive literature review and compared the performance characteristics of countermeasures and related damaging processes by in-situ observations.
Journal ArticleDOI
Analysing turbulence characteristics of flow over submerged flexible vegetated channel
TL;DR: In this article, the applicability of log law is analyzed above the vegetated canopy in a tilting flume with bed covered by artificial vegetation and arranged in a regular staggered configuration.
Journal ArticleDOI
Laboratory investigations of wave attenuation by simulated vegetation of varying densities
TL;DR: In this paper, the authors present the results of an experimental study carried out with simulated rigid submerged and emergent vegetation meadows of varying plant densities in a wave flume 50m long, 0.71m wide and 1.1m deep.
References
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Book
Coastal, Estuarial and Harbour Engineers’ Reference Book
Michael B. Abbott,W. A. Price +1 more
TL;DR: In this article, the authors introduce the concept of nearly-horizontal flows and the theory of turbulence in the physical environment of coastal, estuarial, and harbour regions, as well as the physical and mathematical models in the optimisation of breakwater layout.
Journal ArticleDOI
Quasi-three-dimensional numerical model for flow through flexible, rigid, submerged and non-submerged vegetation
K. S. Erduran,V. Kutija +1 more
TL;DR: In this paper, a quasi-three-dimensional (Q3D) numerical solution is constructed by coupling the finite volume solution of the two-dimensional shallow water equations with a finite difference solution of Navier-Stokes equations for vertical velocity distribution.
Journal ArticleDOI
Impact of stem flexibility on mean flow and turbulence structure in depth-limited open channel flows with submerged vegetation
Wonjun Yang,Sung U.K. Choi +1 more
TL;DR: In this article, the authors investigated the impact of stem flexibility on the mean flow and turbulence structures, two flow types with similar drags but with flexible and rigid stems are compared, and the results of a quadrant analysis and a budget analysis are also provided.
Impact of stem flexibility on mean flow and turbulence structure in depth-limited open channel flows with submerged vegetation Impact de la flexibilité de tige sur l'écoulement moyen et la structure de la turbulence dans un canal de profondeur limitée avec de la végétation submergée
Wonjun Yang,Sung Uk Choi +1 more
TL;DR: In this article, the authors investigated the impact of stem flexibility on the mean flow and turbulence structures, two flow types with similar drags but with flexible and rigid stems are compared, and the results of a quadrant analysis and a budget analysis are also provided.
Journal ArticleDOI
Drag coefficient of unsubmerged rigid vegetation stems in open channel flows
TL;DR: Based on the momentum approach, the authors of as mentioned in this paper conducted extensive flume experiments to measure the drag force FD on a smooth surface single stem in an array of stems, and a dimensional analysis was performed.