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Modelling linear wave transformation induced by dissipative structures—Random waves
Authors:R. Silva   M.A. Losada  P. Salles
Affiliation:aInstituto de Ingeniería, Universidad Nacional Autónoma de México, Cd. Universitaria, 04510 D.F., México;bGrupo de Puertos y Costas, CEAMA—Universidad de Granada, Avda. del Mediterráneo s/n, 18006 Granada, Spain
Abstract:The relevant theory is presented and numerical results are compared with the analytical solution for the interaction of non-breaking waves with an array of vertical porous circular cylinders on a horizontal bed. The extension to the cases of unidirectional and multidirectional waves is obtained by means of a transfer function. The influence of the mechanical properties of porous structures and wave irregularity on wave transformation is analysed. Results for unidirectional and multidirectional wave spectra are compared to those obtained for regular waves. The model presented reproduces well the analytical results and provides a tool for analysing several engineering problems.
Keywords:Random waves   Wave in porous media   Quad-tree technique   Mild-slope equation   Modified mild-slope equation   Finite differences   Refraction–  diffraction
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