[1]杨建刚.环形间隙内振动圆柱流固耦合动力特性研究[J].东南大学学报(自然科学版),2005,35(1):7-10.[doi:10.3969/j.issn.1001-0505.2005.01.002]
 Yang Jiangang.Research on the coupled dynamics of a cylinder oscillating in a gap filled with fluid[J].Journal of Southeast University (Natural Science Edition),2005,35(1):7-10.[doi:10.3969/j.issn.1001-0505.2005.01.002]
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环形间隙内振动圆柱流固耦合动力特性研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
35
期数:
2005年第1期
页码:
7-10
栏目:
机械工程
出版日期:
2005-01-20

文章信息/Info

Title:
Research on the coupled dynamics of a cylinder oscillating in a gap filled with fluid
作者:
杨建刚
东南大学国家火电机组振动工程研究中心, 南京 210096
Author(s):
Yang Jiangang
National Engineering Research Center of Turbo-Generator Vibration, Southeast University, Nanjing 210096, China
关键词:
流体 固体 振动 有限元法
Keywords:
fluid solid vibration finite element method
分类号:
TH113.1
DOI:
10.3969/j.issn.1001-0505.2005.01.002
摘要:
应用有限元法,建立了粘性流体速度和压力振荡方程.考虑流固耦合作用,导出了环形间隙内振动圆柱流固耦合动力模型,提出了流体附加质量和阻尼系数的计算方法.结合实例研究了间隙大小、圆柱在环形间隙内的偏心以及圆柱振动频率等参数的影响.指出流体反作用力随环形间隙的减小、偏心距的增大和振动频率的降低而非线性增大.考虑耦合作用后,附加质量系数基本不变,而附加阻尼系数减小,在大偏心、小间隙和振动频率低时差别比较明显.
Abstract:
Fluid velocity and pressure oscillating equations are set up using finite element method. Considering a cylinder vibrating in a gap filled with viscous fluid, the fluid-solid coupled equations are presented. Method to calculate fluid added mass and damping coefficients is given. Examples show the influence of gap, eccentricity and frequency on the added coefficients. The fluid force increases nonlinearly with the decrease of gap, the decrease of frequency and the increase of eccentricity. The added mass coefficients keep the same while the added damping coefficients decrease if the coupling effect is considered. In case of small gap, low frequency and large eccentricity, the difference of the added damping coefficients becomes remarkable.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 江苏省自然科学基金资助项目(BK2004408)、东南大学优秀青年教师基金资助项目(3003001001).
作者简介: 杨建刚(1970—),男,博士,教授,jgyang@seu.edu.cn.
更新日期/Last Update: 2005-01-20