Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental investigation into downstream field of a horizontal axis tidal stream turbine supported by a mono pile
Abstract A deep insight into wake of a tidal stream turbine can be essential to make tidal stream energy commercially viable. This study is to experimentally investigate downstream field of a horizontal axis tidal stream turbine supported by a mono pile. Two scenarios with and without a rotor are considered and compared with each other in this study. An advanced Acoustic Doppler Velocimeteris employed to measure the time-varying velocities up to eight rotor diameter downstream. Analyses of results show that the flow field within three rotor diameter downstream is strongly influenced by the supporting structures, which lead to asymmetric recovery trend for velocity, turbulence and Reynolds shear stress. Besides, flow characteristics within various lateral distances away from the rotating axis tend to recover in different rates. Both the rotor rotation and supporting structures result in highly anisotropic turbulence in the downstream field. Bed shear stress in the downstream field nearly doubles due to the rotating rotor, although its distribution pattern does not change.
Experimental investigation into downstream field of a horizontal axis tidal stream turbine supported by a mono pile
Abstract A deep insight into wake of a tidal stream turbine can be essential to make tidal stream energy commercially viable. This study is to experimentally investigate downstream field of a horizontal axis tidal stream turbine supported by a mono pile. Two scenarios with and without a rotor are considered and compared with each other in this study. An advanced Acoustic Doppler Velocimeteris employed to measure the time-varying velocities up to eight rotor diameter downstream. Analyses of results show that the flow field within three rotor diameter downstream is strongly influenced by the supporting structures, which lead to asymmetric recovery trend for velocity, turbulence and Reynolds shear stress. Besides, flow characteristics within various lateral distances away from the rotating axis tend to recover in different rates. Both the rotor rotation and supporting structures result in highly anisotropic turbulence in the downstream field. Bed shear stress in the downstream field nearly doubles due to the rotating rotor, although its distribution pattern does not change.
Experimental investigation into downstream field of a horizontal axis tidal stream turbine supported by a mono pile
Zhang, Yuquan (Autor:in) / Zhang, Jisheng (Autor:in) / Lin, Xiangfeng (Autor:in) / Wang, Risheng (Autor:in) / Zhang, Can (Autor:in) / Zhao, Jialin (Autor:in)
Applied Ocean Research ; 101
12.06.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Considerations of a horizontal axis tidal turbine
| Online Contents | 2010
Predictions of Wake and Central Mixing Region of Double Horizontal Axis Tidal Turbine
| Springer Verlag | 2020