In this paper, a new configuration is proposed for using Savonius rotors by installing two Counter-Rotating Savonius Rotors (CRSR) together. In order to study the aerodynamic performance of the CRSR turbine, 2D unsteady turbulent flow around the CRSR turbine is simulated using commercial CFD software ANSYS-Fluent16.0. Turbulence modeling is done using $$k - \omega$$ SST model. Numerical results demonstrate a considerable improvement in aerodynamic performance of the CRSR turbine in comparison to a single conventional rotor. Effect of the distance between two rotors and different angular positions of two rotors on the CRSR turbine performance is studied. It is shown that the most effective parameter influencing the performance of the CRSR turbine is the distance between the rotors. Numerical results reveal that, locating two rotors in an optimal phase angle (θ = 90) and distance(S = 1.0D0), average power coefficient of the CRSR turbine can be increased to 21%, which indicates a rise of 38% compared to conventional Savonius rotors.

中文翻译：

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反向旋转转子在提高Savonius涡轮机性能中的应用

在本文中，通过将两个反向旋转 Savonius 转子 (CRSR) 安装在一起，提出了一种使用 Savonius 转子的新配置。为了研究CRSR涡轮的气动性能，使用商用CFD软件ANSYS-Fluent16.0对CRSR涡轮周围的二维非定常湍流进行了模拟。湍流建模是使用 $$k - \omega$$ SST 模型完成的。数值结果表明，与单个传统转子相比，CRSR 涡轮机的空气动力学性能有了相当大的改进。研究了两转子间距和两转子不同角度位置对CRSR汽轮机性能的影响。结果表明，影响 CRSR 涡轮机性能的最有效参数是转子之间的距离。数值结果表明，