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首页> 外文期刊>International journal of green energy >A novel blade design for Savonius wind turbine based on polynomial bezier curves for aerodynamic performance enhancement
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A novel blade design for Savonius wind turbine based on polynomial bezier curves for aerodynamic performance enhancement

机译:基于多项式Bezier曲线的气动性能增强的夏普利乌斯风力涡轮机的新型叶片设计

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摘要

Advanced wind turbine designs and technologies have been evolved to take advantage of wind energy. Despite the significant progress already attained, the need for a dependable wind energy converter particularly devoted to small-scale applications remains a challenging issue. Due to its design simplicity, Savonius wind turbine is the most suitable candidate for such applications. It operates at low wind speed, with the necessary starting capacity and insensitivity to wind directions. Moreover, in the literature related to wind energy, the Savonius rotor is known for its low performance compared to other types of wind turbines. In this paper, we present a study into the utilization of Bezier curves and transient computational fluid dynamics (CFD) to optimize the conventional Savonius blade design. The k-omega SST turbulence model is employed to perform a series of CFD simulations in order to assess the power coefficient of each generated design. A validation of optimization results using the Taguchi method was carried out. The comparative analysis of the torque and power coefficients shows a significant increase in the power coefficient (C-p). The optimal C(p)is 0.35 and is 29% higher than the conventional Savoniu wind turbine (SWT). Subsequently, the effectiveness of the innovative geometry is proved by improved pressure and velocity distributions around blades of novel design.
机译:先进的风力涡轮机设计和技术已经发展起来利用风能。尽管已经实现了重大进展,但对尤其致力于小规模应用的可靠风能转换器的需求仍然是一个具有挑战性的问题。由于其设计简单,Savonius风力涡轮机是这种应用最合适的候选者。它以低风速运行,具有必要的启动能力和风向的不敏感。此外,与风能相关的文献中,与其他类型的风力涡轮机相比,夏季乌斯转子被较低的性能所知。在本文中,我们展示了利用Bezier曲线和瞬态计算流体动力学(CFD)的研究,以优化传统的Savonius刀片设计。 K-OMEGA SST湍流模型用于执行一系列CFD模拟,以便评估每个产生的设计的功率系数。进行了使用Taguchi方法的优化结果的验证。扭矩和功率系数的比较分析显示了功率系数(C-P)的显着增加。最佳C(P)为0.35,比传统的Savoniu风力涡轮机(SWT)高29%。随后,通过改进的新设计叶片周围的压力和速度分布来证明了创新几何形状的有效性。

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