Comparison and Analysis of Several Common Vertical Axis Wind Turbines for Distributed Energy Sources

Zheng Li ； Weiqiang Qi ； Qunjing Wang

《淡江理工學刊》 21卷4期 (2018/12) Pp. 645-654

https://doi.org/10.6180/jase.201812_21(4).0018

摘要

Based on the 3D simulation and calculation module, three vertical axis wind turbines (VAWT) models will be presented in this paper. The flow field analysis of three models were studied by using ANSYS CFX and FLUENT modules, respectively. The differences between three wind turbine models are compared in different ways. The simulation results show that: through force analysis of the three models, it is concluded that the drag force of the turbines are greater than the lift force with the change of the tip speed ratio, the lift and drag force of the turbine horizontally placed are larger than that of the other two structures. Based on the study of the parameters about three models, the power coefficient (C_p) and torque coefficient (C_t) of the horizontal turbine are larger than the other two; in addition, the relative velocity and pressure of the wind turbines at different positions are analyzed and compared, the wake distribution of three models is preliminarily investigated. The results can provide reference for further research and optimization of the vertical axis wind turbines.

關鍵字

Distributed Energy ； VAWT ； Flow Field ； CFD