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| 相同叶尖速比不同转速的垂直轴风力机气动性能分析 |
| Aerodynamic performance analysis of vertical axis wind turbines under same tip speed ratio and different angular velocity |
| 投稿时间：2013-09-04 |
| DOI：10.13259/j.cnki.eri.2014.03.006 |
| 中文关键词: 直叶片垂直轴风力机 叶尖速比 数值模拟 涡量图 俯仰频率 |
| 英文关键词:straight-blade vertical axis wind turbine tip speed ratio numerical simulation vortical contour pitching frequency |
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| 中文摘要: |
| 在不考虑连杆、转轴及叶尖损失的简化模型基础上，利用Fluent软件采用雷诺平均Navier-Stokes方程与k-ω SST湍流模型对直叶片垂直轴风力机进行了数值模拟。对比了相同叶尖速比λ=4，叶轮半径r分别为1 m和2 m的垂直轴风力机的气动性能。结果表明，在来流风速V∞和叶尖速比λ相同的情况下，不同半径的垂直轴风力机具有十分相似的翼型表面压力分布，对应位置处的升、阻力系数相差不大。 |
| 英文摘要: |
| On the basis of simplified model without concerning the linkage,spindle and tip loss,a straight-blade vertical axis wind turbine(VAWT) was simulated using Fluent software with Navier-Stokes equations and k-ω SST turbulence model.Under the same conditions of tip speed ratio λ=4 and the wind velocity V∞=10 m·s-1,aerodynamic performance of two VAWTs with different impeller radius r=1 m and r=2 m is compared.The results show that the surface pressure distributions of VAWTs are very similar on these conditions,as well as the lift coefficient and resistance coefficient in corresponding azimuth angle. |
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