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Xiang-Feng Lin
Key Laboratory of Coastal Disaster and Defence (Hohai University), Ministry of Education, Nanjing 210024, China

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Journal article
Published: 18 March 2019 in Water
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This study aims to investigate the wake characteristics of a horizontal axis tidal stream turbine supported by a monopile using a numerical approach. Computational fluid dynamics (CFD) simulations based on the open source software OpenFOAM have been performed to enhance understanding of a turbine’s wake. The numerical simulations adopt both the actuator line method and the full rotor geometry method. The numerical results are found to be consistent with experimental data, although some discrepancies are observed at a distance of one rotor diameter downstream. Comparison of numerical results from both methods is performed. The results show that both methods can obtain important flow features and provide similar simulation in the wake of the turbine model. The actuator line method is able to give a better prediction in stream-wise velocity distribution, although it underestimates the turbulence intensity, circumferential velocity and vorticity magnitude slightly, compared with the full rotor geometry method. It is also found that the wake of the monopile and the rotor interact strongly in the downstream field, especially in the region immediately behind the structure. A strong interaction occurs within approximately two rotor diameters downstream.

ACS Style

Xiang-Feng Lin; Ji-Sheng Zhang; Yu-Quan Zhang; Jing Zhang; Sheng Liu. Comparison of Actuator Line Method and Full Rotor Geometry Simulations of the Wake Field of a Tidal Stream Turbine. Water 2019, 11, 560 .

AMA Style

Xiang-Feng Lin, Ji-Sheng Zhang, Yu-Quan Zhang, Jing Zhang, Sheng Liu. Comparison of Actuator Line Method and Full Rotor Geometry Simulations of the Wake Field of a Tidal Stream Turbine. Water. 2019; 11 (3):560.

Chicago/Turabian Style

Xiang-Feng Lin; Ji-Sheng Zhang; Yu-Quan Zhang; Jing Zhang; Sheng Liu. 2019. "Comparison of Actuator Line Method and Full Rotor Geometry Simulations of the Wake Field of a Tidal Stream Turbine." Water 11, no. 3: 560.