圆柱体涡激振动海流能捕获效率影响参数分析
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摘要
圆柱体涡激振动发电装置是一种在浅海低流速条件下,利用涡激振动效应高效捕获海流能的设备,为了在不同海况下均能高效地捕获能量,有必要对获能原理和影响获能效率的参数进行分析。结合质量弹簧阻尼振子模型,在时间上对功率积分,建立柱体涡激振动获能效率公式,得到影响效率的参数;通过数值模拟,结合效率公式,对约化速度、阻尼比和质量比进行讨论,发现在约化速度Ur=12.5、阻尼比系数ξsystem=0.081、质量比m*=1.48的条件下,获能效率最大。
The power generator based on vortex induced vibration(VIV) is a device harvesting energy of ocean currents in shallow sea area, even at very low speed. In order to capture energy efficiently in different conditions, it is necessary to analyze the principle efficiency of harvesting energy and effective parameters. The efficiency equation is established with mass-spring-damping oscillator model, through the time integration for power. The effective parameters can be found;through numerical simulation in combination with efficiency equation, it will be discussed with different reduced velocities, different damping ratios and different mass ratios. It shows that when the reduced velocity equals to 12.5, the damping ratio coefficient is 0.081 and the mass ratio is 1.48, the efficiency of harvesting energy is highest.
The power generator based on vortex induced vibration(VIV) is a device harvesting energy of ocean currents in shallow sea area, even at very low speed. In order to capture energy efficiently in different conditions, it is necessary to analyze the principle efficiency of harvesting energy and effective parameters. The efficiency equation is established with mass-spring-damping oscillator model, through the time integration for power. The effective parameters can be found;through numerical simulation in combination with efficiency equation, it will be discussed with different reduced velocities, different damping ratios and different mass ratios. It shows that when the reduced velocity equals to 12.5, the damping ratio coefficient is 0.081 and the mass ratio is 1.48, the efficiency of harvesting energy is highest.
引文
[1]肖惠民,于波,蔡维由.世界海洋波浪能发电技术的发展现状与前景[J].水电与新能源,2011(1):67-69.[1]Xiao Huimin,Yu Bo,Cai Weiyou.The development status and prospects of ocean wave power generation technology in the world[J].Hydropower and New Energy,2011(1):67-69.
[2]乐智斌,白旭,Wei Qin.海洋立管二维双自由度涡激振动耦合振子模型研究[A].2015年中国钢结构协会海洋钢结构分会学术论文集[C].长沙:中国钢结构协会海洋钢结构分会,2015.339-346.[2]Le Zhibin,Bai Xu,Wei Qin.Study on marine rises vortex-induced vibration of two DOF on plane[A].2015Academic Paper of China Steel Structure Association Offshore Steel Structure Branch[C].Changsha:China Steel Structure Association Marine Steel Structure Branch,2015.339-346.
[3]Xu Bai,Wei Qin.Using vortex strength wake oscillator in modelling of vortex induced vibration in two degrees of freedom[J].European Journal of Mechanics B/Fluids,2014,48(6):165-173.
[4]周熙林,李小超,赵利平.涡激振动能量转换装置基本原理与量纲分析[A].第十七届中国海洋(岸)工程学术讨论会论文集[C].长沙:长沙理工大学,2015.117-121.[4]Zhou Xilin,Li Xiaochao,Zhao Liping.Basic principle and dimensional analysis of vortex induced vibration energy conversion device[A].The Seventeenth China Ocean(Offshore)Engineering Academic Conference Proceedings[C].Changsha:Changsha University of Science and Technology,2015.117-121.
[5]J H Lee,M M Bernitsas.High-damping high-Reynolds VIV tests for energy harnessing using the VIVACE converter[J].Ocean Engineering,2011,38(16):1697-1712.
[6]罗竹梅,张立翔.影响从涡激振动中获取能量的参数研究[J].振动与冲击,2014,33(9):12-15.[6]Luo Zhumei,Zhang Lixiang.Influence of parameters on extracting energy from a vortex-induced vibration[J].Department of Energy and Power Engineering,2014,33(9):12-15.
[7]L Ding,L Zhang,M M Bernitsas,et al.Numerical simulation and experimental validation for energy harvesting of single-cylinder VIVACE converter with passive turbulence control[J].Renewable Energy,2016,85:1246-1259.
[8]Antonio Barrero-Gil,Santiago Pindado,Sergio Avila.Extracting energy from Vortex-Induced Vibrations:A parametric study[J].Applied Mathematical Modeling,2012,36(7):3153-3160.
[9]黄智勇,潘志远,崔维成.两向自由度低质量比圆柱体涡激振动的数值计算[J].船舶力学,2007,11(1):1-9.[9]Huang Zhiyong,Pan Zhiyuan,Cui Weicheng.Numerical simulation of VIV of a circular cylinder with two degrees of freedom and low mass ratio[J].Journal of Ship Mechanics,2007,11(1):1-9.
[10]孙飞.涡激振动潮流能转换装置获能原理研究[D].青岛:中国海洋大学,2013.[10]Sun Fei.Study on mechanism of VIV in tidal currentenergy conversion device[D].Qingdao:Ocean University of China,2013.
[11]秦伟,康庄,宋儒鑫,等.基于功率方程的圆柱体涡激振动研究[J].中国造船,2012(3):1-8.[11]Qin Wei,Kang Zhuang,Song Ruxin,et al.Research on Vortex-Induced Vibration of cylinder by using power equation[J].Shipbuilding of China,2012(3):1-8.
[12]Lin D,Li Z,Wu C,et al.Flow induced motion and energy harvesting of bluff bodies with different cross sections[J].Energy Conversion and Management,2015,91:416-426.
[13]黄智勇.柔性立管涡激振动时域响应分析[D].上海:上海交通大学,2008.[13]Huang Zhiyong.Vortex-Index Vibration of flexible riser in time domain[D].Shanghai:Shanghai Jiao Tong University,2008.
[2]乐智斌,白旭,Wei Qin.海洋立管二维双自由度涡激振动耦合振子模型研究[A].2015年中国钢结构协会海洋钢结构分会学术论文集[C].长沙:中国钢结构协会海洋钢结构分会,2015.339-346.[2]Le Zhibin,Bai Xu,Wei Qin.Study on marine rises vortex-induced vibration of two DOF on plane[A].2015Academic Paper of China Steel Structure Association Offshore Steel Structure Branch[C].Changsha:China Steel Structure Association Marine Steel Structure Branch,2015.339-346.
[3]Xu Bai,Wei Qin.Using vortex strength wake oscillator in modelling of vortex induced vibration in two degrees of freedom[J].European Journal of Mechanics B/Fluids,2014,48(6):165-173.
[4]周熙林,李小超,赵利平.涡激振动能量转换装置基本原理与量纲分析[A].第十七届中国海洋(岸)工程学术讨论会论文集[C].长沙:长沙理工大学,2015.117-121.[4]Zhou Xilin,Li Xiaochao,Zhao Liping.Basic principle and dimensional analysis of vortex induced vibration energy conversion device[A].The Seventeenth China Ocean(Offshore)Engineering Academic Conference Proceedings[C].Changsha:Changsha University of Science and Technology,2015.117-121.
[5]J H Lee,M M Bernitsas.High-damping high-Reynolds VIV tests for energy harnessing using the VIVACE converter[J].Ocean Engineering,2011,38(16):1697-1712.
[6]罗竹梅,张立翔.影响从涡激振动中获取能量的参数研究[J].振动与冲击,2014,33(9):12-15.[6]Luo Zhumei,Zhang Lixiang.Influence of parameters on extracting energy from a vortex-induced vibration[J].Department of Energy and Power Engineering,2014,33(9):12-15.
[7]L Ding,L Zhang,M M Bernitsas,et al.Numerical simulation and experimental validation for energy harvesting of single-cylinder VIVACE converter with passive turbulence control[J].Renewable Energy,2016,85:1246-1259.
[8]Antonio Barrero-Gil,Santiago Pindado,Sergio Avila.Extracting energy from Vortex-Induced Vibrations:A parametric study[J].Applied Mathematical Modeling,2012,36(7):3153-3160.
[9]黄智勇,潘志远,崔维成.两向自由度低质量比圆柱体涡激振动的数值计算[J].船舶力学,2007,11(1):1-9.[9]Huang Zhiyong,Pan Zhiyuan,Cui Weicheng.Numerical simulation of VIV of a circular cylinder with two degrees of freedom and low mass ratio[J].Journal of Ship Mechanics,2007,11(1):1-9.
[10]孙飞.涡激振动潮流能转换装置获能原理研究[D].青岛:中国海洋大学,2013.[10]Sun Fei.Study on mechanism of VIV in tidal currentenergy conversion device[D].Qingdao:Ocean University of China,2013.
[11]秦伟,康庄,宋儒鑫,等.基于功率方程的圆柱体涡激振动研究[J].中国造船,2012(3):1-8.[11]Qin Wei,Kang Zhuang,Song Ruxin,et al.Research on Vortex-Induced Vibration of cylinder by using power equation[J].Shipbuilding of China,2012(3):1-8.
[12]Lin D,Li Z,Wu C,et al.Flow induced motion and energy harvesting of bluff bodies with different cross sections[J].Energy Conversion and Management,2015,91:416-426.
[13]黄智勇.柔性立管涡激振动时域响应分析[D].上海:上海交通大学,2008.[13]Huang Zhiyong.Vortex-Index Vibration of flexible riser in time domain[D].Shanghai:Shanghai Jiao Tong University,2008.