Modelling tidal stream turbines in a three-dimensional wave-current fully coupled oceanographic model

RENEWABLE ENERGY

卷:114

Article; Proceedings Paper

Li, Xiaorong¹  Li, Ming²  McLelland, Stuart J.³  Jordan, Laura-Beth³  Simmons, Stephen M.³  Amoudry, Laurent O.⁴  Ramirez-Mendoza, Rafael^4,5  Thorne, Peter D.⁴ 

[1] Univ Liverpool, Sch Environm Sci, Liverpool L69 7ZT, Merseyside, England

[2] Univ Liverpool, Sch Engn, Liverpool L69 3GQ, Merseyside, England

[3] Univ Hull, Sch Environm Sci, Cottingham Rd, Kingston Upon Hull HU6 7RX, N Humberside, England

[4] Natl Oceanog Ctr, Joseph Proudman Bldg,6 Brownlow St, Liverpool L3 5DA, Merseyside, England

[5] CICESE, Carretera Ensenada Tijuana 3918, Ensenada 22860, Baja California, Mexico

关键词: Tidal stream energy;    Three-dimensional;    Oceanographic model;   

DOI  :  10.1016/j.renene.2017.02.033

来源: Elsevier

【 摘 要 】

A tidal turbine simulation system is developed based on a three-dimensional oceanographic numerical model. Both the current and turbulent controlling equations are modified to account for impact of tidal turbines on water velocity and turbulence generation and dissipation. High resolution mesh size at the turbine location is assigned in order to capture the details of hydrodynamics due to the turbine operation. The system is tested against comprehensive measurements in a water flume experiment and results of Computational Fluid Dynamics (CFD) simulations. The validation results suggest that the new modelling system is proven to be able to accurately simulate hydrodynamics with the presence of turbines. The developed turbine simulation system is then applied to a series of test cases in which a standalone turbine is deployed. Here, complete velocity profiles and mixing are realized that could not have been produced in a standard two-dimensional treatment. Of particular interest in these cases is an observed accelerated flow near the bed in the wake of the turbine, leading to enhanced bottom shear stress (similar to 2 N/m(2) corresponding to the critical stress of a range of fine gravel and finer sediment particles). (C) 2017 The Author(s). Published by Elsevier Ltd.

【 授权许可】

Free