首页|新型水平轴螺旋风力机气动性能分析

新型水平轴螺旋风力机气动性能分析

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为了拓展水平轴风力机的适用范围,采用计算流体力学对2种具有不同旋叶倾角的新型水平轴螺旋风力机及其加装导管后的气动性能进行了三维数值模拟研究.结果表明:相比定角螺旋风力机,变角螺旋风力机在较小尖速比(TSR)时具有更大的功率系数(CP);同时,变角螺旋风力机在全TSR范围内具有更小的推力系数(CT),且2种螺旋风力机CT的差异随着TSR的增大而增大;2种螺旋风力机运行时高压区主要集中在轮毂前端、一阶和二阶旋叶的迎风端,低压区主要集中在三阶旋叶的背风端和轮毂后端;变角螺旋风力机前端旋叶的阻塞度相对较低,使其尾流恢复比定角螺旋风力机快;此外,导管可以显著增大2种螺旋风力机的CP和CT,并拓宽CP的TSR范围.研究结果揭示了水平轴螺旋风力机的气动特点,为该型风力机的优化设计和推广应用提供了一定的参考依据.
Aerodynamic performance analysis of new horizontal-axis spiral wind turbines
In order to expand the application scope of horizontal-axis wind turbines,the aerodynamic per-formance of the two new horizontal-axis spiral wind turbines and their ducted types are investigated by three-dimensional computational fluid dynamics simulation.The results show that the variable-angle spiral wind turbine has a higher power coefficient(CP)than the constant-angle spiral wind turbine in the lower tip-speed ratio(TSR)range.Moreover,the variable-angle spiral wind turbine has a lower thrust coeffi-cient(CT)across the whole TSR range compared to the constant-angle spiral wind turbine,with the difference in CT between the two spiral wind turbines increases as TSR grows.The high-pressure areas of the two spiral wind turbines mainly concentrate at the front of the hub,the windward side of first-order,and second-order rotating blades.Conversely,the low-pressure areas mainly gather at the leeward side of third-order rotating blades and the hub's rear end.The wake recovery of the variable angle spiral wind turbine is faster than that of the fixed angle spiral wind turbine due to the blockage degree of the front ro-tating blade is relatively small.In addition,the duct can significantly improve CP and CT of the two spiral wind turbines,widening the TSR range of CP.The results reveal the aerodynamic performance of horizon-tal-axis spiral wind turbines,providing valuable references for the optimizing the design and promoting the application of this type of wind turbines.

wind energyhorizontal-axis spiral wind turbineductaerodynamic performancecomputa-tional fluid dynamics

宋科、康宇驰

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昆明学院机电工程学院,云南昆明 650214

昆明理工大学机电工程学院,云南昆明 650500

风能 水平轴螺旋风力机 导管 气动性能 计算流体力学

云南省"兴滇英才支持计划"青年人才专项云南省先进装备智能制造技术重点实验室开放基金资助项目云南省基础研究专项云南省地方本科高校基础研究联合专项云南省地方本科高校基础研究联合专项

XDYC-QNRC-2023-0159KLYAEIMTY2022001202201AU070028202001BA070001-197202001BA070001-173

2024

兰州理工大学学报
兰州理工大学

兰州理工大学学报

CSTPCD北大核心
影响因子：0.57
ISSN：1673-5196
年,卷(期)：2024.50(3)
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