摘要
采用有限元与无限元耦合法对三维无界域中直立圆柱所受波浪力进行求解．把整个求解区域分为近场与远场，在近场采用有限元法，远场利用形如ｅ－（ｒ－ｒ０）／Ｌ·ｅｉＫ（ｒ－ｒ０）的衰减函数，采用无限元法，此函数符合流体的物理性质．数值算例的结果与理论解吻合。
In this paper, the finite and infinite element coupling method is used to solve wave force acting on a vertical circular cylinder in the three dimensional unbounded region. The unbounded region is divided into close field and distant field. In the close field the finite element method is used and in the distant field the infinite element method is used to solve the question with e -( r-r 0)/L ·e iK(r-r 0) type decaying function. This function is better suited to the physical nature of fluid. The numerical results are in agreement with theoretical values. This shows that the method is effective.
出处
《天津大学学报》
EI
CAS
CSCD
1996年第5期673-678,共6页
Journal of Tianjin University(Science and Technology)
基金
国家自然科学基金
关键词
耦合法
有限元
无限元
波浪力
圆柱
海上建筑
coupling method, decaying function, finite and infinite element method, wave force
