Release Time:2019-03-11  Hits:

Indexed by: Conference Paper

Date of Publication: 2011-12-01

Included Journals: Scopus、CPCI-S、EI

Volume: 455-456

Page Number: 296-+

Key Words: vertical axis tidal turbine; numerical study; power coefficient; tidal energy

Abstract: 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.