串列不等直径双圆柱海流能发电振子涡激振动数值模拟  

Numerical simulation of vortex-induced vibration of tandem double-cylinder ocean current energy generator

作　　者：白旭[1] 陈云 Bai Xu;Chen Yun(Jiangsu University of Science and Technology,School of Naval Architecture&Ocean Engineering,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《可再生能源》2020年第12期1698-1704,共7页Renewable Energy Resources

基　　金：国家自然科学基金项目(51879125);江苏省高等学校自然科学研究重大项目(18KJA580003);江苏省“六大人才高峰”高层次人才项目(2018-KTHY-033)。

摘　　要：文章基于计算流体力学软件STARCCM采用有限体积法结合重叠网格技术在低雷诺数Re=300条件下对串列不等直径双圆柱进行数值模拟,分析了直径比(d/D)和间距比(G/D)对串列不等直径双圆柱涡激振动特性的影响。研究结果表明:上、下游圆柱之间的相互作用随着间距比的增加而减小;下游小圆柱的振幅比随着直径比的增加而减小,当G/D=2,d/D=0.2时,上、下游圆柱的振幅比均取得最大值,其中下游圆柱的振幅比最大可达3.2 d;间距比和直径比对上游大圆柱的升、阻力系数的影响较大,下游小圆柱的升、阻力系数均随着直径比的增加而呈现出逐渐增大的变化趋势。研究结果可为海流能发电装置振子直径比和间距比的选取提供参考。Based on the computational fluid dynamics software STARCCM,the finite volume method combined with the overlapping grid technology is used to numerically simulate the tandem unequal diameter double cylinder under the condition of low Reynolds number Re=300,The influence of diameter ratio(d/D)and spacing ratio(G/D)on the vortex-induced vibration characteristics of tandem unequal diameter double cylinders is analyzed.The research results show that the interaction between the upstream and downstream cylinders decreases as the spacing ratio increases;The amplitude ratio of the downstream small cylinder decreases as the diameter ratio increases.When G/D=2 and d/D=0.2,the amplitude ratio of the upstream and downstream cylinders both achieve the maximum value,The maximum amplitude ratio can reach 3.2 d.The spacing ratio and diameter ratio have a greater impact on the lift and drag coefficients of the upstream large cylinder.The lift and drag coefficients of the downstream small cylinder show a gradually increasing trend with the increase of the diameter ratio.The research results can provide a reference for the selection of vibrator diameter ratio and spacing ratio of ocean current power generation devices.

关 键 词：串列双圆柱 海流能 间距比 振幅比 涡旋脱落 重叠网格 

分 类 号：TK6[动力工程及工程热物理—生物能] TM612[电气工程—电力系统及自动化]