原子能科学技术Issue(8)：1428-1434,7.DOI:10.7538/yzk.2014.48.08.1428
双弹性管流固耦合振动的数值模拟
Numerical Simulation of Fluid Structure Interaction in Two Flexible Tubes
冯志鹏 1臧峰刚 1张毅雄1
作者信息
- 1. 中国核动力研究设计院 核反应堆系统设计技术重点实验室，四川 成都 610041
- 折叠
摘要
Abstract
In order to further investigate fluid structure interaction problems ,occurring in the nuclear field such as the behavior of PWR fuel rods ,steam generator and other heat exchanger tubes ,a numerical model was presented .It is a three-dimensional fully coupled approach with solving the fluid flow and the structure vibration simultaneously , for the tube bundles in cross flow .The unsteady three-dimensional Navier-Stokes equa-tion and LES turbulence model were solved with finite volume approach on structured grids combined with the technique of dynamic mesh .The dynamic equilibrium equation was discretized according to the finite element theory .The vibration response of a single tube in cross flow was calculated by the numerical model .Both the amplitude and fre-quency were compared with experimental data and existing models in the literature .It is show n that the present model is reasonable .T he flow induced vibration characteristics , for both inline and parallel sets in cross flow ,were investigated by the numerical model . The dynamic response and flow characteristics ,for both inline tubes and parallel tubes with pitch ratio of 1.2 ,1.6 ,2 ,3 and 4 under different incident velocities ,were stud-ied .Critical pitch and critical velocity w ere obtained .关键词
流固耦合振动/大涡模拟/C FD/管束/有限元方法Key words
fluid structure interaction/LES/CFD/tube bundle/FEM分类
数理科学引用本文复制引用
冯志鹏,臧峰刚,张毅雄..双弹性管流固耦合振动的数值模拟[J].原子能科学技术,2014,(8):1428-1434,7.
