Effect of Emerged Moving Coastal Vegetation on Wave Damping

The ability of coastal vegetation to attenuate waves has been well established (Moller et al., 2014). Salt marshes are vegetated coastal wetlands that can act as nature- based coastal defenses. They exhibit a range of plant species, which have been shown to differ in the amount of wave damping they provide (Mullarney & Henderson, 2018). Recent studies have shown that plant flexibility is a key parameter that controls wave energy dissipation (Paul et al., 2016). Yet, no model exists that includes plant flexibility in computationally efficient manner for large-scale coastal zones. Therefore, we have developed a new model for flexible vegetation based on the key mechanisms in the wave-vegetation interaction and applied it to an estuary with diverse salt marsh vegetation.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/AjnFx3aFSzs

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Numerical Modeling of Wave Damping Induced by Emerged Moving Vegetation

Volume 6A: Ocean Engineering ◽

10.1115/omae2020-18588 ◽

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.

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U.S. Army Coastal Engineering Research Center's Ecology Program

Water Science & Technology ◽

10.2166/wst.1984.0085 ◽

1984 ◽

Vol 16 (3-4) ◽

pp. 525-532

Author(s):

E J Pullen ◽

P L Knutson ◽

A K Hurme

Keyword(s):

Coastal Engineering ◽

Coastal Vegetation ◽

Army Corps ◽

Army Corps Of Engineers ◽

Engineering Research ◽

Navigation Channel ◽

Biological Environment ◽

Ecology Program ◽

The U.S ◽

Shore Erosion

The Coastal Engineering Research Center at Fort Belvoir, Virginia, is responsible for research that supports the U.S. Army Corps of Engineers' Civil Works program. This research involves coastal navigation, channel design and maintenance, storm flooding, shore erosion control, and coastal ecology. The ecology research is focused on two major areas: (1) use of coastal vegetation for engineering purposes and (2) effects of coastal engineering activities on the biological environment. The objectives and accomplishments of the ecology research are discussed and specific examples of field guidance are presented.

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Tollmien--Schlichting wave damping by a streamwise oscillating Lorentz force

Magnetohydrodynamics ◽

10.22364/mhd.44.3.1 ◽

2008 ◽

Vol 44 (3) ◽

pp. 205-222 ◽

Cited By ~ 7

Author(s):

T. Albrecht ◽

H. Metzkes ◽

R. Grundmann ◽

G. Mutschke ◽

G. Gerbeth

Keyword(s):

Lorentz Force ◽

Wave Damping ◽

Tollmien Schlichting

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On the mechanisms of MHD wave damping in the partially ionized solar plasmas

Advances in Space Research ◽

10.1016/j.asr.2005.02.025 ◽

2006 ◽

Vol 37 (3) ◽

pp. 447-455 ◽

Cited By ~ 23

Author(s):

M.L. Khodachenko ◽

H.O. Rucker ◽

R. Oliver ◽

T.D. Arber ◽

A. Hanslmeier

Keyword(s):

Wave Damping ◽

Partially Ionized ◽

Solar Plasmas

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Enhancement of wave damping for metamaterial beam structures with embedded inerter-based configurations

Applied Acoustics ◽

10.1016/j.apacoust.2021.108013 ◽

2021 ◽

Vol 178 ◽

pp. 108013

Author(s):

Zhuang Dong ◽

Dimitrios Chronopoulos ◽

Jian Yang

Keyword(s):

Wave Damping ◽

Beam Structures

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The effect on coastal vegetation of trampling on a parabolic dune

Aeolian Research ◽

10.1016/j.aeolia.2010.03.001 ◽

2010 ◽

Vol 2 (2-3) ◽

pp. 105-111 ◽

Cited By ~ 21

Author(s):

Patrick Hesp ◽

Phillip Schmutz ◽

M.L. (Marisa) Martinez ◽

Luke Driskell ◽

Ryan Orgera ◽

...

Keyword(s):

Coastal Vegetation

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

Volume 7: Ocean Engineering ◽

10.1115/omae2016-54298 ◽

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.

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