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首页> 外文会议>International Conference on Mechanical Automation and Materials Engineering >Numerical Simulation of the Aerodynamic Performance of a H-type Wind Turbine during Self-Starting
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Numerical Simulation of the Aerodynamic Performance of a H-type Wind Turbine during Self-Starting

机译：自启动期间H型风力涡轮机空气动力学性能的数值模拟

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摘要

The aerodynamic performance and the bypass flow field of a vertical axis wind turbine under self-starting are investigated using CFD simulations in this paper. The influence of pitch angle variations on the performance of the wind turbine during self-starting is presented. A two-dimensional model of the wind turbine with three blades is employed. A commercial software FlowVision is employed in this paper, which uses dynamic Cartesian grid. The SST turbulence model is used for turbulence modeling, which assumes the flow full turbulent. Based on the comparison between the computed time-dependent variations of the rotation speed with the experimental data, the time-dependent variations of the torque are presented. The characteristics of self-starting of the wind turbine are analyzed with the pitch angle of 0o, -2o and 2o. The influence of pitch angle variations on two-dimensional unsteady viscous flow field through velocity contours is discussed in detail.
机译：本文使用CFD仿真研究了自动启动下垂直轴风力涡轮机的空气动力学性能和旁通流场。呈现了俯仰角变化对自动启动期间风力涡轮机性能的影响。采用带有三片叶片的风力涡轮机的二维模型。本文采用了一种商业软件流程，它使用动态笛卡尔栅格。 SST湍流模型用于湍流建模，其假设流动湍流。基于与实验数据的旋转速度的计算时间依赖变化之间的比较，提出了扭矩的时间依赖性变化。通过0O，-2O和2O的俯仰角分析风力涡轮机的自动启动特性。详细讨论了通过速度轮廓对二维不稳定粘性流场的桨距角变化的影响。

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