潮流能转换装置串列双圆柱下游圆柱流致振动数值模拟
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摘要
针对双振子流致振动潮流能转换装置,基于ADINA软件对上游圆柱固定、下游圆柱横向振动的串列双圆柱流致振动,在不同工况下进行了数值模拟,并与文献和试验结果进行了对比分析,验证了该模拟方法的正确性并分析了不同因素(间距L=1.5 D~8.0 D、流速v=0.4~0.75m/s及相应流速v下的雷诺数Re=2.88×10~4~5.76×10~4)对下游圆柱流致振动的影响。结果表明,圆柱间距影响双振子尾流模式和下游振子振动形式;间距L=5 D~7 D范围内下游振子达到最大振幅,比单圆柱涡激振动增大50%。
Flow induced vibration of the downstream cylinder oscillator of a tidal currernt converter with two tandom arrangend cyliners was simulated at different spacing ratios(1.50~8.0 D)and varied flow velocities(0.4~0.75 m/s)in the condition that the upstream cylinder locked by using software ADINA to analyze the influences of various factors on the flow-induced vibration of the downstream oscillator.The method was corroborated by comparing with literature and experimental results.The results showed that the distance between the two cylinders have influence on the wake pattern and the vibration mode of the downstream oscillator;Amplitude of the vibration of the downstream oscillators reached the maximum,which was 50% more than that of the single cylinder vortex induced vibration,while the distance between the oscillators was in the range of L=5 D~7 D.
Flow induced vibration of the downstream cylinder oscillator of a tidal currernt converter with two tandom arrangend cyliners was simulated at different spacing ratios(1.50~8.0 D)and varied flow velocities(0.4~0.75 m/s)in the condition that the upstream cylinder locked by using software ADINA to analyze the influences of various factors on the flow-induced vibration of the downstream oscillator.The method was corroborated by comparing with literature and experimental results.The results showed that the distance between the two cylinders have influence on the wake pattern and the vibration mode of the downstream oscillator;Amplitude of the vibration of the downstream oscillators reached the maximum,which was 50% more than that of the single cylinder vortex induced vibration,while the distance between the oscillators was in the range of L=5 D~7 D.
引文
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[11]Zravkovich M M.The effects of flow interference between two circular cylinders in various arrangements[J].Journal of Fluids and Structures,1987,1:239-261.
[12]Bokaian A,Geoola F.Wake-induced galloping of two interfering circular cylinders[J].Journal of Fluid Mechanics,1984,146(146):383-415.
[13]Carmo B S,Sherwin S J,Bearman P W,et al.Flow-induced vibration of a circular cylinder subjected to wake interference at low Reynolds number[J].Journal of Fluids&Structures,2011,27(4):503-522.
[14]Hover F S,Triantafyllou M S.Galloping Response of A cylinder With Upstream Wake Interference[J].Journal of Fluids&Structures,2001,15(s 3-4):503-512.
[2]Bernitsas M M,Ph.D,Professor,et al.VIVACE(Vortex induced vibration aquatic clean energy):A new concept in generation of clean and renewable energy from fluid flow[J].Journal of Offshore Mechanics&Arctic Engineering,2006,130(4):619-637.
[3]郭晓玲,唐国强,刘名名,等.低雷诺数下串联双圆柱涡激振动机理的数值研究[J].振动与冲击,2014,33(4):60-69.Guo Xiaoling,Tang Guoqiang,LiuMingming,et al.Numerical investigation on vortex-induced vibration of twin tandem circular cylinders under low Reynolds number[J].Journal of Vibration and Shock,2014,33(4):60-69.
[4]陈文曲,任安禄,李广望.串列双圆柱绕流下游圆柱两自由度涡致振动研究[J].力学学报,2004,36(6):732-738.Chen Wenqu,Ren Anlu,Li Guangwang.The numerical study of two-degree-of-freedom vortex-induced vibration of the downstream cylinder in tandem arrangement[J].Acta Mechanica Sinica,2004(06):732-738.
[5]丁林.被动湍流控制下多柱体流致振动研究[D].重庆:重庆大学,2013.Ding Lin.Research on Flow Induced Motion of Multiple Circular Cylinders with Passive Turbulence Control[D].Chongqing:Chongqing University,2013.
[6]Mysa R C,Kaboudian A,Jaiman R K.On the origin of wake-induced vibration in two tandem circular cylinders at low Reynolds number[J].Journal of Fluids&Structures,2016,61:76-98.
[7]渠基顺,管义锋.柱体涡激运动研究概述[J].中外船舶科技,2013(3):12-16.Qu Jishun,Guan Yifeng.Overview of the research on the vortex induced motion of the cylinder[J].Shipbuilding Science and Technology,2013(3):12-16.
[8]刘景伟,郭海燕,赵婧.等直径串列双圆柱体绕流的数值模拟[J].中国海洋大学学报(自然科学版),2013,43(12):92-97.Li Jingwei,Guo haiyan,Zhao jing.Numerical simulation of flow around two tandem circular cylinders of equal diameter[J].Periodical of Ocean University of China,2013,43(12):92-97.
[9]武爽.潮流能转换装置阻尼条件下圆柱振子涡激振动现象研究[D].青岛:中国海洋大学,2015.Wu Shuang.Research on VIV Mechanism of Cylinder Oscillator with Damping in Tidal Current Energy Converter[D].Qingdao:Ocean University of China,2015.
[10]Sanchis A S,levik G,Grue J.Two-degree-of-freedom vortex-induced vibrations of a spring-mounted rigid cylinder with low mass ratio[J].Journal of Fluids&Structures,2008,24(6):907-919.
[11]Zravkovich M M.The effects of flow interference between two circular cylinders in various arrangements[J].Journal of Fluids and Structures,1987,1:239-261.
[12]Bokaian A,Geoola F.Wake-induced galloping of two interfering circular cylinders[J].Journal of Fluid Mechanics,1984,146(146):383-415.
[13]Carmo B S,Sherwin S J,Bearman P W,et al.Flow-induced vibration of a circular cylinder subjected to wake interference at low Reynolds number[J].Journal of Fluids&Structures,2011,27(4):503-522.
[14]Hover F S,Triantafyllou M S.Galloping Response of A cylinder With Upstream Wake Interference[J].Journal of Fluids&Structures,2001,15(s 3-4):503-512.