Abstract
This paper investigates the wave-induced flow field and water particle movement inside and around a vertical permeable structure, which is affected by the interaction between water waves and porous media. A three-dimensional fully nonlinear numerical model is developed to study the interaction between water waves and permeable structures. Modified resistance terms inside the equations of motion are proposed, which are able to consider the size of porous material directly inside the governing equations. It is understood that the wave-induced flow field and water particle movement inside and around the permeable structure are strongly influenced by the wave period or relative width of the permeable structure (structure width to wavelength ratio). Other parameters such as porous material size, porosity, and resistance coefficients affect the flow field. However, their degree of influence differs depending on the wave period.
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