Numerical investigation of a savonius wind turbine with elliptical blades

被引：0

作者：

机构：

[1] School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an , 100083, Shaanxi Province

来源：

Tian, Wenlong | 1600年 / Chinese Society for Electrical Engineering卷 / 34期

基金：

中国国家自然科学基金;

关键词：

Coefficient of power; Computational fluid dynamics; Elliptical blade; Vertical axis; Wind turbine;

D O I：

10.13334/j.0258-8013.pcsee.2014.32.014

中图分类号：

学科分类号：

摘要：

A modified Savonius wind turbine with elliptical blades was introduced with the aim of increasing the power efficiency of the turbine. The influence of the blade ellipticity on the turbine performance was investigated with a transient computational fluid dynamics (CFD) method over a range of tip speed ratios. The numerical simulation was based on the Reynolds averaged Navier-Stokes (RANS) equations and the renormalization group k-ε turbulent model was utilized. The numerical method was validated with existing experimental data. The results indicate that: the maximum blade torque increases with the blade ellipticity while the minimum blade torque changes on the contrary; the turbine with a blade ellipticity of 0.72 generates the maximum power coefficient 0.2650, which is 5.84% higher than a conventional Savonius turbine. © 2014 Chin. Soc. for Elec. Eng.

引用

页码：5796 / 5802

页数：6

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