分裂导线微风振动数值仿真  

Numerical simulation of aeolian vibration of bundle conductors

作　　者：陈元坤[1] 李黎[2,3] 曹化锦[2,3] 

机构地区：[1]中南建筑设计院股份有限公司,武汉430071 [2]华中科技大学土木工程与力学学院,武汉430074 [3]华中科技大学控制结构湖北省重点实验室,武汉430074

出　　处：《振动与冲击》2013年第7期179-183,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(50878093)

摘　　要：基于流体动力学软件,采用二维圆柱绕流计算方法,对分裂导线微风振动进行仿真分析。对固定双圆柱绕流进行仿真,与经典文献对比验证模型及计算方法的正确性;基于自编程序实现分裂导线振动流固耦合分析,研究不同支撑、不同分裂导线间距及不同分裂倾角下双分裂导线的振动特性,得到各工况下子导线竖向振幅随缩减风速的变化曲线。该研究对分裂导线微风振动特性研究具有重要意义。Based on the computational fluid dynamics （CFD） software, the method of a two-dimensional cylinder surrounded by unsteady wind flow was used to simulate aeolian vibration of bundle conductors. Firstly, the analysis of unsteady flow around fixed double circular cylinders was performed. The model and the analysis method were verified comparing with classical literatures. Then, based on the moving mesh technology and the programming, the vibration behavior of double conductors under conditions of different supports, spacings and tilting angles was studied. The vertical amplitudes of the sub-conductors versus the reduced velocity were obtained. This study was important for investigation on aeolian vibration of bundle conductors.

关 键 词：分裂导线 计算流体动力学 微风振动 动网格 

分 类 号：TU311.3[建筑科学—结构工程]