振荡流下旋转圆柱涡致振动与传热特性研究

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中图分类号：TB126；TK124 文献标志码：A 文章编号：1000-582X（2025）07-062-13

Study on vortex-induced vibration and heat transfer characteristics of rotating cylinders under oscillatory flow

YANG Guoyao'，SUN Yue'，SHAN Zhichao¹²，LI Xiangl²，DING Lin'

（1. Key Laboratory ofLow-grade Energy Utilization Technologies and Systems，Ministry Education， Chongqing

University，Chongqing 40o044，P.R.China;2.Sichuan Gas Turbine Establishment，Aero Engine Corporationof China，Mianyang Sichuan， 61050o，P.R. China.）

Abstract：Considering the characteristicsofdeep ocean currents，this study numerically investigates the effects of reducedvelocity （U*） and rotational speed （a） onthe vortex-induced vibration（VIV） response and heat transfer performance ofa circular cylinder subjected to oscilatory inflow.The results reveal multiple extrema in the peak amplitude ratios in both the streamwise and transverse （Apeaks，y*） directions. As a increases， the maximum increases， while the corresponding U* decreases. Significant variations are observed in cylinder displacement and lift/drag coefficients with changes in a and U* . The time-averaged displacement in the x 1 direction increases with U* ，whereas the average displacement in the y -direction and the lift coefficient both increasewith a . The motion trajectory of the cylinder lacks a distinct pattern within the range of 0⩽α⩽1.0 ，but becomes circular at a=1.5 .With increasing U* ，the average Nusselt number increases，and the distribution of local Nusselt numbers gradually forms a circular pattern.As a 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 analysisreveals weaker heat exchangeat the front stagnation point，while heat transfer and local thermal efficiency at the rear stagnation point are significantly enhanced.

Keywords：vortex-induced vibration;oscilatory flow；heat transfer characteristics;rotating cylinder;Nuselt number

钝体结构包括圆柱体、椭圆和矩形，在工程流体力学中，“涡致振动（vortex-inducedvibration，VIV）”是钝体结构与外部流体的周期性不规则运动相互作用而引起的结构运动。（剩余13970字）