| Summary: | 碩士 === 國立交通大學 === 土木工程系 === 87 === Base on a two dimensional linear water wave theory ,this work develops the boundary element method (BEM) with linear element to examine the interaction of oblique water waves with a series of submerged permeable breakwaters.
In this study , the flow field is separated into two regions: a pure water region and a porous structure regionPotential throry is applied to the pure water region,and the pore velocity potential theory of Sollitt and Cross is applied to the porous structure region.Numerical results for reflection,transmission and energy dissipation will be provided.The reflection and transmission coefficients of water wave are effected by the incident angle of wave,the height of breakwater , the shape of breakwater,the width of breakwater and the clearance between each breakwaters.The numerical technique's accuracy is confirmed by comparing the numerical results with previously numerical and experimental ones of the interaction of waves with single submerged permeable breakwater.
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