Numerical Study of Water Waves through Submerged Permeability Inclined Thin Plates and Associated Energy Dissipation

• Main Authors: Chen, Wei-han, 陳韋翰
• Other Authors: Yueh, Ching-Yun
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/q8735q

碩士 === 國立臺灣海洋大學 === 河海工程學系 === 105 === The interaction between monochromatic incident waves and multiple submerged permeability inclined thin plates has been investigated in the context of two-dimensional linear potential theory. Many types of multiple submerged inclined thin plates have been proposed, including single inclined thin plate, dual vertical arrayed inclined thin plates, double horizontal arrayed inclined thin plates, triple vertical arrayed inclined thin plates, triple horizontal arrayed inclined thin plates and two inclined identical permeable plates that are symmetric with the z-axis. In dual vertical arrayed inclined thin plates, the rear part of the upper plate is fixed at the submergence depth d/h and the lower plate is parallel to the upper plate with the same inclined angle. The porous effect parameter G of the two parallel porous plates with a constant space is the same. The accuracy and validity of the Composite BEM (CBEM) and Multi-domain BEM (MBEM) was determined by comparing the solutions obtained by other researchers employing different method, and excellent agreement has been observed. The performance of the proposed submerged permeability inclined thin plates breakwaters can be significantly observed by selecting optimal design parameters, such as porous effect parameter G, submergence depth d/h, plate width B/h and inclined angle θ. Finally, a series of 2D plots for various parameters are presented to better see the optimal cases.