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首页> 外文期刊>Renewable energy >Computational analysis of flow over a cascade of S-shaped hydrofoil of fully reversible pump-turbine used in extracting tidal energy
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Computational analysis of flow over a cascade of S-shaped hydrofoil of fully reversible pump-turbine used in extracting tidal energy

机译：用于提取潮汐能的完全可逆式水轮机的S形水翼叶栅上的流动计算分析

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摘要

Hydrodynamic characteristics like lift and drag coefficients of a cascade of blades as well as comprehensive data of pressure loss and flow deflection are important for the design of a hydroturbomachine. In the present paper numerical investigation of flow over a cascade of S-shaped hydrofoils is presented. These S-shaped hydrofoils find potential application in the design of a fully reversible pump-turbine employed in tidal power generation. Influences of stagger angle, blade spacing and angle of incidence on the performance of S-blade cascade were investigated and these are reported here. Numerical results are validated with experimental data available in the literature and further simulations help to extend the knowledge of the flow field for such a complicated geometry. It is found from numerical simulations that the useful range of operation is restricted to +6° for turbine operation and -6° for pumping. A significant finding in this study is that the cascade pressure loss is significantly more for the pump cascade than the turbine cascade and this loss increases as the blade spacing is reduced.
机译：诸如叶栅叶片的升力和阻力系数之类的流体力学特性以及压力损失和流偏度的综合数据对于水力涡轮机的设计很重要。在本文中，对S型水翼叶栅上的流动进行了数值研究。这些S形水翼在潮汐发电中采用的完全可逆式水轮机设计中具有潜在的应用前景。研究了交错角，叶片间距和入射角对S型叶片叶栅性能的影响，并在此进行了报道。数值结果通过文献中提供的实验数据进行了验证，进一步的模拟有助于扩展这种复杂几何形状的流场知识。从数值模拟中可以发现，对于涡轮机运行，有用的操作范围限制为+ 6°，对于泵浦来说，有效范围为-6°。在这项研究中的一个重要发现是，泵叶栅的叶栅压力损失比涡轮叶栅的叶栅压力损失要大得多，并且这种损失随着叶片间距的减小而增加。

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  • 来源
    《Renewable energy》 |2015年第5期|240-249|共10页
  • 作者

    Micha Premkumar T.; Dhiman Chatterjee;

  • 作者单位

    Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India,Hindustan University, Chennai 603103, India;

    Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai 600036, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Tidal energy; Fully reversible pump-turbine; S-shaped hydrofoil;

    机译：潮汐能;完全可逆的水泵水轮机;S形水翼;

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