本研究主要探討波浪與相鄰彈性透水性潛堤相互作用之問題，提出一理論解析解，求解理論與方法為延伸Lan and Lee(2010)所提出的單一彈性透水潛堤理論。兩相鄰彈性透水潛堤分別為均質且等向透水之彈性介質。論文求解上將問題之區域共劃分成七個部分，藉由交界面邊界條件的連續性，即為潛堤與流體交界面處之動力邊界條件壓力連續與質量通率連續，配合正交性特性將波浪與相鄰彈性透水潛堤互制作用問題聯立求解，據此波浪與相鄰彈性透水潛堤之解析解即可求出。在模式驗證上，本文與Mei and Black(1969)之不透水剛性潛堤，李和劉(1995)、黃和林(1997)之透水剛性潛堤，Lan and Lee(2010)之彈性透水潛堤之解析解結果比較，均得到合理結果。文中主要分兩部份做探討，第一部分為相同材質下相鄰彈性透水潛堤堤寬的改變、滲透性係數變化對波場的影響；第二部份為不同材質下相鄰彈性透水潛堤堤寬改變、前後位置改變、滲透性係數變化對波浪的影響。根據分析結果顯示相同彈性透水材質下兩潛堤堤寬相等時有較大的能量損失；在剛性透水材質與彈性透水材質組合之不同材質下，同一種潛堤堤寬的組合中，其前後順序互相交換，僅對於波浪的反射波有明顯不同的影響，在透過波與能量損失方面，則影響較不明顯。

In this study, the problem of wave interaction with submerged adjacent porous elastic breakwaters is solved analytically. The method of solution is an extension from Lan and Lee (2010), a single submerged poro-elastic structure which is sloved by subjecting to boundary conditions. The submerged adjacent porous elastic breakwaters are assumed to be homogeneous, isotropic and elastic. The problem of the study domain is divided into seven regions, from which the form of solution can be in terms of harmonic functions. Using the matching boundary conditions, i.e., kinematic and dynamic conditions combined with orthogonality, a set of simultaneous equations is developed and solved numerically. By comparing the analytic solution with the rigid submerged breakwater (Mei and Black, 1969), permeable rigid submerged breakwater (Lee and Liu, 1995 ; Huang and Lin, 1997) and poro-elastic submerged breakwater (Lan and Lee, 2010), favorable agreements are found. This study focuses on two main parts, (a) changes of width of breakwater and permeable coefficient effect on wave profile, and (b) the effect of materials and configurations of breakwater on wave variation. The theoretical analysis shows that the largest energy loss occurs when the adjacent structures are both having the same material and width. For the case the different materials, the configuration of adjacent breakwaters significiently affect the reflection coefficient, while the energy loss and transmission coefficient are less obviously influenced.

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