鹦鹉螺等角螺线型风力机数值模拟及建筑扰流分析

Numerical simulation of nautilus equiangular spiral wind turbine and analysis of building turbulence

为了提高风力机组的整体性能,解决风力机在实际运行中受建筑物影响的问题,利用仿真分析软件Fluent对不同叶片数的新型鹦鹉螺等角螺线型风力机进行气动性能研究,建立建筑物与风力机组排布模型,分析建筑物扰流特性,对比扰流环境对风力机组转矩性能的影响。结果表明:3个叶片风力机的整体性能更优;建筑物下游出现紊流区域,切向速度明显增加,其附近的新型鹦鹉螺等角螺线型风力机组转矩性能明显提升,验证了建筑物附近安装鹦鹉螺等角螺线型风力机组的可行性。所提风力机组排布方式可有效提升风力机性能,为风力机结构优化设计和建筑物附近风力机排布提供参考。

In order to improve the overall performance of wind turbines and solve the problem that the wind turbine is affected by the building in actual operation,the simulation analysis software Fluent was used to study the aerodynamic performance of the new Nautilus equiangular spiral wind turbine with different numbers of blades.The layout model of buildings and wind turbines were established,the turbulence characteristics of buildings were analyzed,and the torque performance of wind turbines in the turbulent environment were compared.The results show that the overall performance of the three-blade wind turbine is more superior;there is turbulence area at the lower position of the building,and the tangential speed is significantly increased;the performance of the new Nautilus equiangular spiral wind turbine near the building are significantly improved,which verifies the feasibility of installing the Nautilus equiangular spiral wind turbine near the building.The proposed arrangement of wind turbines can effectively improve the performance of wind turbines,and provide references for the optimal design of wind turbine structures and the arrangement of wind turbines near buildings.