Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/15419
Title: A Numerical Study of Wave interaction with porous media
Authors: SENADHEERA A.S. ANUJA KARUNARATHNA
Keywords: turbulent boundary layer, flow injection, porous seabeds, wave damping, solitary wave, porous breakwater
Issue Date: 6-Jun-2006
Source: SENADHEERA A.S. ANUJA KARUNARATHNA (2006-06-06). A Numerical Study of Wave interaction with porous media. ScholarBank@NUS Repository.
Abstract: In this study, a new theoretical solution for the velocity profile in a turbulent boundary layer subject to flow injection is derived by solving momentum and turbulent kinetic energy equations. The new solution can provide more accurate prediction of bed shear stress for a wide range of flow injection rate, fluid type and surface roughness. A new porous flow model is derived by spatially averaging Navier-Stokes equations in which the effect of porous media is treated by additional resistance forces. Reynolds number is explicitly formulated in this porous flow model to correctly represent wide range of porous flows. These two theoretical models are incorporated into a two-dimensional numerical model in which the flow outside the porous media is described by Reynolds Averaged Navier-Stokes (RANS) equations while the effects of turbulence are modeled by the k-eps model. The improved numerical model is employed to study wave damping over porous seabeds and solitary wave interaction with porous breakwaters.
URI: http://scholarbank.nus.edu.sg/handle/10635/15419
Appears in Collections:Ph.D Theses (Open)

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