Meshless Method with Domain Decomposition for Submerged Porous Breakwaters in Waves  

作　　者：CHIOUKH Nadji YÜKSEL Yalçın 

机构地区：[1]Department of Hydraulics,University of Sidi Bel-Abbes,Sidi Bel-Abbes 22000,Algeria [2]Laboratory of Civil Engineering and Environment,University of Sidi Bel-Abbes,Sidi Bel-Abbes 22000,Algeria [3]Laboratory of Hydraulics and Coastal Engineering,Yildiz Technical University,Esenler-Istanbul 34220,Turkey

出　　处：《Journal of Ocean University of China》2021年第6期1325-1340,共16页中国海洋大学学报（英文版）

基　　金：the Ministry of Higher Edu-cation and Scientific Research of Algeria(grant PRFU number A01L06UN310220200002).

摘　　要：Based on the improved version of the meshless singular boundary method(ISBM)in multi domain(MD),a numerical method is proposed in this paper to study the interaction of submerged permeable breakwaters and regular waves at normal incidence.To account for fluid flow inside the porous breakwaters,the conventional model of Sollitt and Cross for porous media is adopted.Both single and dual trapezoidal breakwaters are examined.The physical problem is formulated in the context of the linear potential wave theory.The domain decomposition method(DDM)is employed,in which the full computational domain is decomposed into separate domains,that is,the fluid domain and the domains of the breakwaters.Respectively,appropriate mixed type boundary and continuity conditions are applied for each subdomain and at the interfaces between domains.The solution is approximated in each subdomain by the ISBM.The discretized algebraic equations are combined,resulting in an overdetermined full system that is solved using a least-square solution procedure.The numerical results are presented in terms of the hydrodynamic quantities of reflection,transmission,and wave-energy dissipation.The relevance of the results of the present numerical procedure is first validated against data of previous studies,and then selected computations are discussed for various structural conditions.The proposed method is demonstrated to be highly accurate and computationally efficient.

关 键 词：meshless method domain decomposition regular waves BREAKWATERS POROSITY reflection transmission DISSIPATION coastal environment 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]