Three-dimensional modelling of suspended sediment transport in the far wake of tidal stream turbines
| Autor: | Xiaorong Li, Laurent O. Amoudry, Stuart J. McLelland, Qingyang Song, Rafael Ramirez-Mendoza, Stephen M. Simmons, Peng Zheng, Laura-Beth Jordan, Ming Li, Peter D. Thorne |
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| Rok vydání: | 2020 |
| Předmět: |
060102 archaeology
Renewable Energy Sustainability and the Environment business.industry 020209 energy Sediment Dimensional modeling 06 humanities and the arts 02 engineering and technology Wake Turbine Suspension (chemistry) 0202 electrical engineering electronic engineering information engineering Shear stress Environmental science 0601 history and archaeology business Tidal power Sediment transport Marine engineering |
| Zdroj: | RENEWABLE ENERGY |
| ISSN: | 0960-1481 |
| DOI: | 10.1016/j.renene.2019.11.096 |
| Popis: | A three-dimensional tidal turbine simulation based on an oceanographic numerical model has been tested for suspended sediment calculation, particularly in the wake of a standalone tidal turbine. The results suggest a need for further improvement of the model in order to obtain correct predictions of suspension strength of the wake and suspended sediment concentration under the influence of a turbine (compared to measured data). Due to the wide use of FVCOM in coastal applications where turbines are commonly installed, it proves necessary to address this issue. Two approaches with respect to modifying bed shear stress and turbulent mixing calculations in the presence of a turbine are proposed and tested in this research. Using data collected in the laboratory as reference, the turbulent mixing enhancement approach is shown to be effective. A series of tests are carried out to identify the impact of the turbine on suspended sediment transport in its vicinity. The results suggest that the impact is highly dependent upon the sediment grain size. |
| Databáze: | OpenAIRE |
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