Abstract
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.
Highlights
The installation of diffuser is an important way to improve the efficiency of tidal turbines, which is prom⁃ ising for engineering practice
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
Summary
西北工业大学学报 Journal of Northwestern Polytechnical University https: / / doi.org / 10.1051 / jnwpu / 20213910093 本文以垂直轴水轮机为研究对象,采用 CFD 数 值模拟方法,开展了垂直轴水轮机导流增效装置性 能模拟研究,完成了水轮机及导流增效装置的几何 建模,使用 OpenFOAM 中的 snappyHexMesh 模块进 行了叶片和导流增效装置的网格划分,利用 Open⁃ FOAM 中的不可压流体求解器模拟研究了导流增效 装置外形参数等对垂直轴水轮机水动力学性能的影 响规律。 W2d = ( ωr + UDcosβsinθ) 2 + ( UDcosβcosθ) 2 ( 12) 片所受得切向力 ft 和径向力 fn ft = L·sinα - F·cosα fn = - L·cosα - F·sinα
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
