کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6767411 | 512462 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
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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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Computational analysis of flow over a cascade of S-shaped hydrofoil of fully reversible pump-turbine used in extracting tidal energy Computational analysis of flow over a cascade of S-shaped hydrofoil of fully reversible pump-turbine used in extracting tidal energy](/preview/png/6767411.png)
چکیده انگلیسی
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 â6° 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 77, May 2015, Pages 240-249
Journal: Renewable Energy - Volume 77, May 2015, Pages 240-249
نویسندگان
Micha Premkumar T., Dhiman Chatterjee,