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基于Simplic算法,采用SSTk-ω湍流模型,利用Fluent 6.3数值模拟软件对新型的小型双风轮风力机的气动特性进行了三维流场研究,并与同规格单风轮风力机的三维流场进行了比较.结果表明:与单风轮风力机相比,随着后风轮叶片数目的增加,新型双风轮风力机的湍流强度变大,风力机运行的稳定性在一定程度上有所降低;当后风轮的叶片数目合理时,后风轮对前风轮的影响较小,且可以有效地捕捉到前风轮的漏风,使得新型双风轮风力机的风轮在获得较大迎风面积的同时可以保持较高的转速,进而能够高效地实现风能的两级利用,明显提高发电功率和增大风能利用系数.
Based on the Simplic algorithm, the three-dimensional flow field of the new small double-rotor wind turbine was studied by using SSTk-ω turbulence model and Fluent 6.3 numerical simulation software. The results show that the turbulence intensity of the new double-rotor wind turbine increases with the increase of the number of the rear rotor blades compared with the single-rotor wind turbine, and the stability of the operation of the wind turbine is reduced to a certain extent ; When the number of blades of the rear rotor is reasonable, the influence of the rear rotor on the front rotor is small, and the air leakage of the front rotor can be effectively captured, so that the rotor of the new double-rotor wind turbine can obtain larger windward Area while maintaining a high speed, which can effectively achieve the two-stage use of wind energy, significantly increase the power generation and increase the wind energy utilization factor.