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

Li, Xiaorong; Li, Ming; McLelland, Stuart J.; Jordan, Laura Beth; Simmons, Stephen M.; Amoudry, Laurent O.; Ramirez-Mendoza, Rafael; Thorne, Peter D.

Abstract

© 2017 The Author(s) 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 (∼2 N/m 2 corresponding to the critical stress of a range of fine gravel and finer sediment particles).

Citation

Li, X., Li, M., McLelland, S. J., Jordan, L. B., Simmons, S. M., Amoudry, L. O., Ramirez-Mendoza, R., & Thorne, P. D. (2017). Modelling tidal stream turbines in a three-dimensional wave-current fully coupled oceanographic model. Renewable energy, 114, 297-307. https://doi.org/10.1016/j.renene.2017.02.033

• Journal Article Type: Article
• Acceptance Date: Feb 13, 2017
• Online Publication Date: Feb 20, 2017
• Publication Date: 2017-12
• Deposit Date: Aug 26, 2018
• Publicly Available Date: Aug 28, 2018
• Journal: Renewable Energy
• Print ISSN: 0960-1481
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 114
• Pages: 297-307
• DOI: https://doi.org/10.1016/j.renene.2017.02.033
• Keywords: Tidal stream energy; Three-dimensional; Oceanographic model
• Public URL: https://hull-repository.worktribe.com/output/596551
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0960148117301192?via%3Dihub
• Contract Date: Aug 28, 2018