Journal
COASTAL ENGINEERING
Volume 107, Issue -, Pages 1-13Publisher
ELSEVIER
DOI: 10.1016/j.coastaleng.2015.09.011
Keywords
Wave damping by vegetation; Real vegetation; Combined waves and currents; Analytical formulation; Drag
Categories
Funding
- rMEC (Ministerio de Educacion, Cultura y Deporte, Spain) [BOE-A-2012-6238]
- RETOS INVESTIGACION program of the Spanish Ministry of Economy and Competitiveness [BIA-2014-59718-R]
- European Regional Development Fund
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Based on energy conservation a new analytical formulation for the evaluation of wave damping under the combined effect of waves and both following and opposing currents is presented. The formulation obtained for regular and random waves allows the derivation of analytical expressions for the vegetation drag coefficient as a function of wave damping parameters. These parameters are calibrated using a unique experimental set obtained in a large-scale wave basin considering the interaction of waves and currents with real vegetation representative of salt marshes, namely Spartina anglica and Puccinellia maritime. Comparisons show the quality of the analytical formulation under different hydrodynamic conditions, vegetation species and various Reynolds numbers formulated in terms of plant characteristics such as the deflected plant length accounting for the flow-induced bending of the vegetation. The new formulation can be useful to be implemented in phase averaged and phase resolving numerical models of wave propagation. (C) 2015 Elsevier B.V. All rights reserved,
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