屋顶H型垂直轴风力机气动性能CFD计算方法研究
梅毅,曲建俊
摘要(Abstract):
以一种屋顶H型垂直轴风力机为研究对象,采用计算流体动力学方法模拟了风轮在10 m/s风速下的功率系数曲线。提出以计算效率和精度作为功率系数数值计算方法适用性的评价指标,通过对比功率系数曲线的计算结果和实验数据,研究了湍流模型、网格单元形状和时间步长对功率系数计算适用性的影响。结果表明,计算H型垂直轴风力机功率系数时,采用SST k-ω湍流模型、四边形网格划分计算域,设置时间步长为风轮旋转0.5°所需时间,可获得较高的计算效率和计算精度。
关键词(KeyWords): 屋顶H型垂直轴风力机;计算流体动力学;功率系数;湍流模型;时间步长
基金项目(Foundation):
作者(Author): 梅毅,曲建俊
参考文献(References):
- [1]熊敏鹏,张严,袁家海,等.我国风电的经济性评价及政策建议[J].中国能源,2016,38(10):20-26.
- [2]张旭,吕新良,宋晓林,等.小型分布式风力发电系统设计及控制技术[J].陕西电力,2012,(1):75-78.
- [3]张敏吉,梁嘉,孙洋洲,等.分布式风电--电池储能系统可用性分析[J].电力建设,2016,37(11):29-34.
- [4]袁行飞,余俊伟.屋顶安装型风力机塔架风振反应分析[J].浙江大学学报(工学版),2013,17(11):1911-1916.
- [5]潘雷.建筑环境中的风能利用[D].济南:山东建筑大学,2006.
- [6]杨蓉,彭兴黔.高层建筑屋顶风能利用的数值模拟[J].华侨大学学报(自然科学版),2012,33(1):69-73.
- [7]Battisti L,Zanne L,Anna S D,etal.Aerodynamic measurements on a vertical axis wind turbine in a large scale wind tunnel[J].Journal of Energy Resources Technology,2011,133:0312011-0312019.
- [8]李岩,田川公太郎.叶片附着物对直线翼垂直轴风力机性能影响的风洞试验[J].可再生能源,2008,26(5):21-23.
- [9]Keiana M.A modified streamtube model for vertical axis wind turbines[J].Wind Engineering,2012,36(2):145-180.
- [10]Qin N,Howell R,Durrani N,et al.Unsteady flow simulation and dynamic stall behaviour of vertical axis wind turbine blades[J].Wind Engineering,2011,35(4):511-527.
- [11]Untaroju A,Wood H G,Allaire P E,et al.Investigation of self-starting capability of vertical axis wind turbines using a computational fluid dynamics approach[J].Journal of Solar Energy Engineering,2011,133:0410101-0410108.
- [12]Wang S Y,Ingham D B,Ma L,et al.Numerical investigations on dynamic stall of low Reynolds number flow around oscillating airfoils[J].Computers and Fluids,2010,39(9):1529-1541.
- [13]Edwards J M,Danao A L,Howell R J.Novel experimental power curve determination and computational methods for the performance analysis of vertical axis wind turbines[J].Journal of Solar Energy Engineering,2012,134(3):0310081-03100811.
- [14]GB/T 19068.3-2003,离网型风力机发电机组第3部分:风洞实验方法[S].
- [15]Kooiman S J,Tullis S.Response of a vertical axis wind turbine to time varying wind conditions found within the urban environment[J].Wind Engineering,2010,34(40):389-401.
- [16]Fiedler A J,Tullis S.Blade offset and pitch effects on a high solidity vertical axis wind turbine[J].Wind Engineering,2009,33(3):237-246.
- [17]Almohammadi K M,Ingham D B,Ma L,et al.Computational fluid dynamics(CFD)mesh independency techniques for a straight blade vertical axis wind turbine[J].Energy,2013,58:483-493.
- [18]Islam M,Amin M R,Ting D S K,et al.Performance Analysis of a Small Capacity Straight Balded VAWT with Prospective Airfoils[A].46th AIAA Aero space Science Meeting and Exhibit[C].Reno,2008.
- [19]Islam M,Ting D S K,Fartaj A.Desirable airfoil features for small capacity straight bladed VAWT[J].Wind Engineering,2007,31(3):165-196.
- [20]茅靖峰,吴爱华,吴国庆,等.垂直轴永磁直驱风力发电系统全风速功率控制[J].可再生能源,2014,32(9):1339-1345.
- [21]梅毅,曲建俊,许明伟.垂直轴风力机叶片动态失速数值模拟[J].农业机械学报,2014,45(3):184-190.