旋转周期性含液容器的流固耦合动力特性分析(Ⅰ)  

Fluid structure coupling dynamic characteristic analysis for rotationally periodic liquid filled vessel (Ⅰ)

作　　者：杜建镔[1] 王勖成[1] 

机构地区：[1]清华大学工程力学系

出　　处：《清华大学学报（自然科学版）》1999年第8期108-111,120,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金;核工业基金

摘　　要：为了对容器内流体的晃动特性以及流体对容器动力特性的影响有一个比较完整的认识，同时考虑到三维流固耦合计算规模较大的问题，针对含液容器具有旋转周期性的特点，将旋转周期方法引入流固耦合动力特性分析，大量地缩减了流固耦合计算的规模，对于诸如储油罐以及快堆主钠池等大型含液容器的动力分析具有重要的意义，而且该方法在理论上不引入任何近似。与整体计算的结果比较表明，该方法十分有效和可靠。A method was presented for solving the problem of fluid stiff matrix singularity existed in the solution of the fluid structure coupling equation based on displacement(structure) press(fluid with free surface) formulation. The method was also used in the calculation of rotationally periodic fluid structure coupling system. Another method was developed by inducting adequate constraints to handle the rotationally periodic coupling system with fluid nodes and structure nodes on its rotational axis. The validity and reliability of above mentioned methods are verified by some numerical examples.

关 键 词：旋转周期性 流固耦合 动力特性 含液容器 

分 类 号：O321[理学—一般力学与力学基础] O351.2[理学—力学]