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论文类型：会议论文

发表时间：2011-12-01

收录刊物：EI、CPCI-S、Scopus

卷号：455-456

页面范围：296-+

关键字：vertical axis tidal turbine; numerical study; power coefficient; tidal energy

摘要：Numerical simulations of flows over two-dimensional vertical axis tidal turbines are carried out. Unsteady Reynolds averaged Navier-Stokes Equations are applied to model turbulent flows. Influence of the central shaft and number of blades on flow field and thus performances of turbines are investigated. Performances in terms of torque and power coefficients are obtained for different types of turbines. Results demonstrates that the central shaft has a negative influence on flow field and power coefficients. Solidity and tip speed ratio are two important factors to affect turbine's performances. This paper provides useful information for future studies.