Long waves through emergent coastal vegetation.

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Long waves through emergent coastal vegetation.

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Title: Long waves through emergent coastal vegetation.
Author: Mei, Chiang C.; Chan, I-Chi; Liu, Philip L. F.; Huang, Zhenhua; Zhang, Wenbin
Copyright year: 2011
Abstract: We study the effects of emergent coastal forests on the propagation of long surface waves of small amplitude. The forest is idealized by an array of vertical cylinders. Simple models are employed to represent bed friction and to simulate turbulence generated by flow through the tree trunks. A multi-scale (homogenization) analysis similar to that for seepage flows is carried out to deduce the effective equations on the macro-scale. The effective coefficients are calculated by numerically solving the micro-scale problem in a unit cell surrounding one or several cylinders. Analytical and numerical solutions for wave attenuation on the macro-scale for different bathymetries and coastal forest configurations are presented. For a transient incident wave, analytical results are discussed for the damping of a leading tsunami. For comparison series of laboratory data for periodic and transient incident waves are also presented. Good agreement is found even though some of the measured waves are short or nonlinear.
Subject: DRNTU::Science::Geology.
Type: Journal Article
Series/ Journal Title: Journal of fluid mechanics
Rights: © 2011 Cambridge University Press. This paper was published in Journal of Fluid Mechanics and is made available as an electronic reprint (preprint) with permission of Cambridge University Press. The paper can be found at the following official URL: [http://dx.doi.org/10.1017/jfm.2011.373 ].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law."
Version: Published version

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