作　　者： ; ; ; ; ;

机构地区： 河北工程大学土木工程学院

出　　处： 《河北工程大学学报（自然科学版）》 2013年第3期9-12,共4页

摘　　要： 针对弹性圆柱薄壳与横向绕流场的流固耦合问题,采用相容拉格朗日-欧拉法,建立了中等弯曲问题的理论分析方程组,着重求解壳体的法向位移和流体表面压力系数。结果表明:在横向绕流场作用下,壳体横截面由圆形变形为近似椭圆形,同时,壳体变形也对壳体表面流场压力产生了影响.通过算例,讨论有关参数对壳体法向位移和表面流体压力系数的影响。最后,应用ANSYS软件对该问题进行了数值模拟,验证了理论解的可信度。 For the fluid -solid interaction problem between an elastic thin cylindrical shell and a transversal cross -flow, United Lagrangian -Eulerian method is applied to build the theoretical equa- tions for the medium deflection problem, and the deformation and surface pressure coefficient of the shell are focused on. The results suggest that, under the action of a transversal cross - flow, the round section of the shell is changed into approximate ellipse; besides, the deformation of the shell influ- ences the surface pressure coefficient of the shell. By examples, the effects of parameters concerned on deformation and surface pressure coefficient of the shell are discussed. Finally, numerical simula- tion for the problem proceeds using ANSYS, and the theoretical solution confidence are consequently verified.

关 键 词： 流固耦合 相容拉格朗日 欧拉法 弹性圆柱壳 绕流 弯曲变形 数值模拟

领　　域： [理学] [理学]