Volume 39, Number 1, February 2021
|Page(s)||93 - 100|
|Published online||09 April 2021|
Influence of inlet line shape on hydrodynamic performance of tidal energy diffuser
School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
The installation of diffuser is an important way to improve the efficiency of tidal turbines, which is promising for engineering practice. In this paper, the open source code OpenFOAM is used as the platform. Numerical simulations are carried out to investigate the influence of the performance of the diffuser for the vertical axis tidal turbines. Several different types of diffusers are designed by distinguishing the line shape. Through systematic simulations, the influence of inlet line shape on the hydrodynamics performances of tidal energy diffuser is summarized. The velocity field, pressure field, etc. are analyzed to recover the flow modifications induced by the diffuser. The best line shape is finally found which can optimize the harnessing efficiency of the tidal turbine, which provides important clues for the development of tidal energy devices.
Key words: tidal energy / tidal turbine / OpenFOAM / diffuser / numerical simulation / inlet line shape
关键字 : 潮流能 / 水轮机 / OpenFOAM / 导流罩
© 2021 Journal of Northwestern Polytechnical University. All rights reserved.
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