中国石油大学学报（自然科学版）2017，Vol.41Issue(3)：169-175,7.DOI:10.3969/j.issn.1673-5005.2017.03.021
质量比对二自由度圆柱涡激振动影响的计算研究
Calculation study on the influence of mass ratio on VIV of a 2-DOF cylinder
摘要
Abstract
An iterative solution algorithm was developed to solve the cylindrical motion equation using Fluent UDF codes and dynamic mesh method,through which the numerical simulation of the vortex-induced vibration (VIV) of a two degree of freedoms (2-DOF) elastically mounted cylinder at a certain reduced velocity.And the influence of different mass ratios on the VIV lift was analyzed.It is found that the iterative solution algorithm can reasonably predict the VIV of elastically mounted cylinder.And the influence of the VIV lift is significant.Compared to high mass ratio cylinders,low mass ratio cylinders can excite higher amplitude,larger lift coefficient,and the phase angle reverse corresponds with a larger reduced velocity U*.The trajectory of the cylinder transfers from the initial arc figure to "8" figure,and finally to a water drop figure.关键词
涡激振动/流固耦合/质量比/数值模拟Key words
vortex-induced vibration/solid-fluid interaction/mass ratio/numerical simulation分类
数理科学引用本文复制引用
章大海,王文颢,石凡奇,郝木明..质量比对二自由度圆柱涡激振动影响的计算研究[J].中国石油大学学报（自然科学版）,2017,41(3):169-175,7.基金项目
山东省自然科学基金项目(ZR2012EEQ011) （ZR2012EEQ011）
