高雷诺数时分离盘长度对圆柱绕流特性的影响

摘要/Abstract

摘要：

使用大涡模拟方法，研究了高雷诺数时分离盘长度对圆柱绕流特性的影响，对不同长度分离盘下作用在圆柱体上的升力系数、拖曳力系数以及尾部流场的无量纲漩涡泄放频率(strouhal数)以及漩涡泄放形态进行了对比分析.分析结果表明：依据升力系数以及拖曳力系数随时间历程的变化特性可以将分离盘长度大致划分为3个区间，分别为稳定区间I(分离盘长度L=0D时，D为圆柱直径)、非稳定区间II(L=0.5D-1.0D)以及再稳定区间III(L=1.5D-8.0D).当分离盘长度从区间I变化到区间II时，Strouhal(Sr)数出现突降；当分离盘长度从区间II变化到区间III时，Sr出现突升.随着分离盘长度的增加，圆柱尾部流场的漩涡泄放形式从2S模式(即从圆柱两侧每次只泄放单个漩涡)逐渐转化为2P模式(即从圆柱两侧每次同时泄放2个漩涡).

关键词: 圆柱体, 分离盘, 大涡模拟, 高雷诺数, 流场特性

Abstract:

Influence of splitter plate length on characteristics of flow past a circular cylinder at high Reynolds numbers is investigated using large eddy simulation (LES). Lift coefficients, drag coefficients, Strouhal numbers and vortex shedding patterns of different splitter plate lengths are compared and analyzed. The results of analysis show: based on the time histories of lift coefficients and drag coefficients, the splitter plate lengths could be divided into three regimes, which are the stable regime I (when the splitter plate length L=0D, D is the diameter of the circular cylinder), the unstable regime II (L=0.5D-1.0D), and the stable again regime III (L=1.5D-8.0D). When splitter plate length changes from regime I to regime II, there is a sudden drop of Strouhal number. When splitter plate length changes from regime II to regime III, there is a sudden increase of Strouhal number. With the increase of splitter plate length, the vortex shedding pattern of flow field changes from 2S to 2P.

Key words: Circular cylinder, Splitter plate, Large eddy simulation, High Reynolds numbers, Flow characteristics

中图分类号:

O 357

高云1, 2,王盟浩1,宗智3,邹丽3,彭庚1. 高雷诺数时分离盘长度对圆柱绕流特性的影响[J]. 上海交通大学学报（自然版）, 2017, 51(4): 504-.

GAO Yun1,2,WANG Menghao1,ZONG Zhi3,ZOU Li3,PENG Geng1. Effect of Splitter Plate Length on Hydrodynamic#br# Performance Around Cylinder at High Reynolds Numbers[J]. Journal of Shanghai Jiaotong University, 2017, 51(4): 504-.

参考文献

［1］高云, 付世晓, 杨家栋, 等. 细长柔性立管涡激振动疲劳损伤分析［J］. 上海交通大学学报, 2016, 50(8): 12701277.
GAO Yun, FU Shixiao, YANG Jiadong et al. Fatigue damage analysis of vortexinduced vibration of a long, flexible riser ［J］. Shanghai Jiao Tong University, 2016, 50(8): 12701277.
［2］CHOI H, JEON W P, KIM J. Control of flow over a bluff body ［J］. Annual Review of Fluid Mechanics, 2008, 40: 113139.
［3］高云，付世晓，宋磊建，柔性立管涡激振动抑制装置试验研究［J］，振动与冲击，2014, 33(14): 7783.
GAO Yun, FU Shixiao, SONG Leijian. Experimental investigation on the suppression device of VIV of a flexible riser ［J］. Journal of Vibration and Shock, 2014, 33(14): 7783.
［4］任铁, 高云, 付世晓, 等. 剪切来流下柔性立管涡激振动抑制装置试验研究［J］, 船舶力学, 2016, 20(4): 497507.
REN Tie, GAO Yun, FU Shixiao, et al. Experimental investigation on the suppression device ofVIV of a flexible riser in sheared currents ［J］. Journal of Ship Mechanics, 2016, 20(4): 497507.
［5］ZHU H J, YAO J. Numerical evaluation of passive control of VIV by small control rods ［J］, Applied Ocean Research, 2015, 51: 93116.
［6］谭波, 王嘉松, 谷斐, 等. 利用分离盘控制隔水管涡激振动的数值模拟［J］. 水动力学研究与进展, 2009, 24(1): 4348.
TAN Bo, WANG Jiasong, GU Fei, et al. Numerical simulation of VIV Control on marine riser with splitter plates ［J］. Journal of Hydrodinamics. 2009, 24(1): 4348.
［7］SUDHAKAR Y, VENGADESAN S. Vortex shedding characteristics of a circular cylinder with an oscillating wake splitter plate ［J］. Computers & Fluids, 2012, 53: 4052.
［8］BAO Y, TAO J. The passive control of wake flow behind a circular cylinder by parallel dual plates ［J］. Journal of Fluids and Structures, 2013, 37: 201219.
［9］WU J, SHU C, ZHAO N. Numerical study of flow control via the interaction between a circular cylinder and a flexible plate ［J］. Journal of Fluids and Structures, 2014, 49: 594613.
［10］朱仁庆, 郑婷婷, 李紫晖. 带分隔板的海洋立管尾流场数值研究［J］. 船舶力学, 2014, 18(7): 746753.
ZHU Renqing, ZHENG Tingting, LI Zihui. Numerical simulation on the wake field of marine riser fitted with a splitter plate ［J］. Journal of Ship Mechanics, 2014, 18(7): 746753.
［11］孙冰, 李金宣, 包艳. 基于平行双板结构的圆管尾流抑制方法研究［J］. 海洋工程, 2015, 33(3): 100106.
SUN Bing, LI Jinxuan, BAO Yan. Flow control method for wake suppression of circular pipes based on parellel dual plates ［J］. The Oceaning Engineering, 2015, 33(3): 100106.
［12］王赛, 邵传平. 隔离板对流向振荡圆柱尾流旋涡脱落的抑制［J］. 力学学报, 2012, 44(4): 787791.
WANG Sai, SHAO Chuanping. Suppresion of vortex shedding from an oscillating circular cylinder by a splitter plate ［J］. Chinese Journal of Theoretical and Applied Mechanics, 2012, 44(4): 787791.
［13］QIU Y, SUN Y. WU Y, et al. Effects of splitter plates and Reynolds number on the aerodynamic loads acting on a circular cylinder ［J］. Journal of Wind Engineering and Industrial Aerodynamics, 2014, 127: 4050.
［14］HUERAHUARTE F J. On splitter plate coverage for suppression of vortexinduced vibrations of flexible cylinders ［J］. Applied Ocean Research, 2014, 48: 244249.
［15］SZEPESSY S, BEARMAN P W. Aspect ratio and end plate effects on vortex shedding from a circular cylinder ［J］. Journal of Fluid Mechanics, 1992, 234: 191217.
［16］WEST G S, APELT C J. Measurements of fluctuating pressures and forces on a circular cylinder in the Reynolds number range 104 to 2.5×105［J］. Journal of Fluids and Structures, 1993, 7(3): 227244.
［17］YEON S M, YANG J, STERN F. Largeeddy simulation of the flow past a circular cylinder at subto supercritical Reynolds numbers［J］. Applied Ocean Research, 2016, 59: 663675.

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