圆柱薄壳与横向绕流场的流固耦合模型  

Model for fluid-solid interaction problem between a thin cylindrical shell and a transversal cross-flow

作　　者：周小利[1] 李晶[2] 郝亚娟[3] 张伟[4] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]唐山学院基础教学部,河北唐山063000 [3]燕山大学理学院,河北秦皇岛066004 [4]河北联合大学迁安学院冶金与材料系,河北迁安064400

出　　处：《辽宁工程技术大学学报（自然科学版）》2013年第8期1055-1059,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(11102181);河北省自然科学基金资助项目(A2012203117)

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,建立了问题的模型及理论分析方程组,着重求解壳体发生弯曲大变形时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.研究成果可供利用相容拉格朗日-欧拉法解决弹性弹性圆柱薄壳与粘性流体相互作用问题时参考.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 model and theoretical equations,and the deformation and surface pressure coefficient of the shell of large bending 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 influences 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.The research results can supply future reference when the interaction problems between a thin cylindrical shell and viscous fluid are being solved using United Lagrange-Euler method.

关 键 词：流固耦合 相容拉格朗日-欧拉法 圆柱薄壳 绕流 解析分析 弯曲 变形 表面流体压力系数 

分 类 号：N5[自然科学总论]