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Wind tunnel and numerical study of a straight-bladed vertical axis wind turbine in three-dimensional analysis (Part I: For predicting aerodynamic loads and performance)

机译:直叶片垂直轴风力涡轮机的风洞和数值研究的三维分析(第一部分:用于预测空气动力负荷和性能)

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This paper presents a straight-bladed VAWT (vertical axis wind turbine) model for the evaluation of aerodynamic forces and inertial contributions to rotor blade deformation. In this paper, a two-bladed VAWT is proposed and analyzed with CFD (computational fluid dynamics) and wind tunnel experiments in three-dimensional (3D) investigation. In wind tunnel experiments, pressure measurement system is presented to measure the pressure acting on a single blade of straight-bladed VAWT in the spanwise direction. In numerical analysis, 3D CFD models have been performed to simulate the aerodynamic forces characteristics of VAWT with k-epsilon SST (Shear Stress Transport) (k-epsilon) turbulence model. From comparing the results of the wind tunnel experiments and numerical analysis, it is found that the fluid force decreased with the increase of spanwise positions excluding the position of support structure. Furthermore, according to the result from six-component balance, the waveforms of the power coefficient C-pw have similar characteristics and show smaller values than CFD calculations. (C) 2016 Elsevier Ltd. All rights reserved.
机译:本文提出了一种直叶片式VAWT(垂直轴风力涡轮机)模型,用于评估空气动力和惯性对转子叶片变形的影响。本文提出了一种两叶VAWT,并利用CFD(计算流体力学)和风洞实验进行了三维(3D)研究。在风洞实验中,提出了一种压力测量系统,以测量在翼展方向上作用于直叶片VAWT的单个叶片上的压力。在数值分析中,已经执行了3D CFD模型以模拟具有kεSST(剪切应力传递)(kε)湍流模型的VAWT的空气动力特性。通过比较风洞实验和数值分析的结果,发现流体力随着翼展方向位置(不包括支撑结构位置)的增加而减小。此外,根据六分量平衡的结果,功率系数C-pw的波形具有相似的特性,并且显示出比CFD计算小的值。 (C)2016 Elsevier Ltd.保留所有权利。

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