重庆大学学报2025，Vol.48Issue(7)：62-74,13.DOI:10.11835/j.issn.1000-582X.2025.07.006
振荡流下旋转圆柱涡致振动与传热特性研究
Study on vortex-induced vibration and heat transfer characteristics of rotating cylinders under oscillatory flow
摘要
Abstract
Considering the characteristics of deep ocean currents,this study numerically investigates the effects of reduced velocity(U*)and rotational speed(α)on the vortex-induced vibration(VIV)response and heat transfer performance of a circular cylinder subjected to oscillatory inflow.The results reveal multiple extrema in the peak amplitude ratios in both the streamwise(A*peaks,x)and transverse(A*peaks,y)directions.As α increases,the maximum A*peaks,x increases,while the corresponding U* decreases.Significant variations are observed in cylinder displacement and lift/drag coefficients with changes in α and U*.The time-averaged displacement in the x-direction increases with U*,whereas the average displacement in the y-direction and the lift coefficient both increase with α.The motion trajectory of the cylinder lacks a distinct pattern within the range of 0≤α≤1.0,but becomes circular at α=1.5.With increasing U*,the average Nusselt number increases,and the distribution of local Nusselt numbers gradually forms a circular pattern.As α increases,the vortex shedding transitions from a 2S pattern to a single-row configuration,with the wake stretching into a U-shaped structure.Temperature field analysis reveals weaker heat exchange at the front stagnation point,while heat transfer and local thermal efficiency at the rear stagnation point are significantly enhanced.关键词
涡致振动/振荡流/换热特性/旋转圆柱/努塞尔数Key words
vortex-induced vibration/oscillatory flow/heat transfer characteristics/rotating cylinder/Nusselt number分类
通用工业技术引用本文复制引用
杨国耀,孙悦,单智超,李祥,丁林..振荡流下旋转圆柱涡致振动与传热特性研究[J].重庆大学学报,2025,48(7):62-74,13.基金项目
重庆市自然科学基金面上项目(CSTB2024NSCQ-MSX0463) （CSTB2024NSCQ-MSX0463）
中国航发四川燃气涡轮研究院国家财政稳定支持项目.Supported by the Natural Science Foundation of Chongqing(CSTB2024NSCQ-MSX0463),and National Financially Stable Support Project of Sichuan Gas Turbine Establishment,Aero Engine Corporation of China. （CSTB2024NSCQ-MSX0463）
