...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Energy Resources Technology >Examining the Aerodynamic Drag and Lift Characteristics of a Newly Developed Elliptical-Bladed Savonius Rotor
【24h】

Examining the Aerodynamic Drag and Lift Characteristics of a Newly Developed Elliptical-Bladed Savonius Rotor

机译：检查新开发的椭圆叶片Savonius转子的气动阻力和升力特性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The elliptical-bladed Savonius wind turbine rotor has become a subject of interest because of its better energy capturing capability. Hitherto, the basic parameters of this rotor such as overlap ratio, aspect ratio, and number of blades have been studied and optimized numerically. Most of these studies estimated the torque and power coefficients (CT and CP) at given flow conditions. However, the two important aerodynamic forces, viz., the lift and the drag, acting on the elliptical-bladed rotor have not been studied. This calls for a deeper investigation into the effect of these forces on the rotor performance to arrive at a suitable design configuration. In view of this, at the outset, two-dimensional (2D) unsteady simulations are conducted to find the instantaneous lift and drag forces acting on an elliptical-bladed rotor at a Reynolds number (Re) = 0.892 x 10(5). The shear stress transport (SST) k-omega turbulence model is used for solving the unsteady Reynolds averaged Navier-Stokes equations. The three-dimensional (3D) unsteady simulations are then performed which are then followed by the wind tunnel experiments. The drag and lift coefficients (C-D and C-L) are analyzed for 0-360 deg rotation of rotor with an increment of 1 deg. The total pressure, velocity magnitude, and turbulence intensity contours are obtained at various angles of rotor rotation. For the elliptical-bladed rotor, the average C-D, C-L, and C-P, from 3D simulation, are found to be 1.31, 0.48, and 0.26, respectively. The average C-P for the 2D elliptical profile is found to be 0.34, whereas the wind tunnel experiments demonstrate C-P to be 0.19.
机译：椭圆叶片的Savonius风力发电机转子因其更好的能量捕获能力而成为人们关注的主题。迄今为止，已经对该转子的基本参数如重叠比，纵横比和叶片数进行了研究和数值优化。这些研究大多数都估计了给定流量条件下的扭矩和功率系数（CT和CP）。但是，尚未研究作用在椭圆叶片转子上的两个重要的空气动力，即升力和阻力。这就要求对这些力对转子性能的影响进行更深入的研究，以得出合适的设计配置。有鉴于此，首先进行二维（2D）不稳定模拟，以发现雷诺数（Re）= 0.892 x 10（5）时作用在椭圆叶片上的瞬时升力和曳力。剪切应力传递（SST）k-ω湍流模型用于求解非稳态雷诺平均Navier-Stokes方程。然后执行三维（3D）不稳定模拟，然后进行风洞实验。对于转子旋转0-360度（增量为1度），分析了阻力和升力系数（C-D和C-L）。在转子旋转的各个角度下均可获得总压力，速度大小和湍流强度等值线。对于椭圆叶片转子，通过3D模拟得出的平均C-D，C-L和C-P分别为1.31、0.48和0.26。发现二维椭圆形的平均C-P为0.34，而风洞实验表明C-P为0.19。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号