Numerical Modeling for Wave Attenuation by Coastal Vegetation using FLOW3D
S. Hemavathi1, R. Manjula2
1S. Hemavathi, Research Scholar, Department of Civil Engineering, National Institute of Technology NITT, Tiruchirappalli, (Tamil Nadu), India.
2R. Manjula, Assistant Professor, Department of Civil Engineering, National Institute of Technology NITT, Tiruchirappalli (Tamil Nadu), India.
Manuscript received on 26 March 2019 | Revised Manuscript received on 07 April 2019 | Manuscript Published on 18 April 2019 | PP: 864-867 | Volume-7 Issue-6S March 2019 | Retrieval Number: F03740376S19/2019©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Coastal vegetation, such as seagrass provides multiple ecologically beneficial functions viz., coastal protection by wave mitigation, soil erosion, and seabed stabilization. This paper investigates the efficiency of submerged vegetation as a buffer system in attenuating the incident waves by the numerical study. To simulate the wave–vegetation interactions, a fully three-dimensional numerical model was developed using Flow-3D® software. This model uses a vegetation-flow parameter that combines the characteristics of vegetation and waves; vegetal parameters that describe the length of the meadow (L), the spacing of the plant (SP), plant density (N), plant height (hs) and thickness (t) of the vegetation. Waves were simulated by specifying wave characteristics like wave height (H), water depth (h) and wave period (T). The numerical simulations results were compared with the published experimental literature (Manca et al., 2012) and wave attenuation is very well agreeing with the literature results and error is found to be 10%.
Keywords: Vegetation, Submergence Ratio, Wave Attenuation, Seagrass, Numerical Modeling.
Scope of the Article: Numerical Modelling of Structures