立式轴向风力机转子轴承装配及非封闭翼型叶片气动特性研究

IF 1.4 Q4 ENGINEERING, INDUSTRIAL
A. Panda, L. Rozhkova, E. Kuznetsov, V. Nahornyi
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引用次数: 0

摘要

在国际实践中,用于高速风力发电机的传统叶片,无论是水平轴向还是垂直轴向,都采用翼型。然而,对于水平轴向风力机来说,这种叶型的叶片来风攻角的工作值范围很窄,离地牵拉力矩的值也很低。对于垂直轴向风力机,完全没有带翼叶转子的自启动,需要额外的装置来启动转子。为了保证转子的自启动和风机在高、低风速下的运行,研制了一种新的叶片型线形状,称为非封闭翼型线。发展的概念是,叶片应该具有一种在运动开始时参与拉力的配置,然后,随着运动的建立,将产生升力,这在操作模式中获得主导特征。本文介绍了研制的非封闭翼叶气动特性的实验研究结果。得到的结果之一是确定了叶型厚度对来风亚临界迎角取值范围的影响,以及传统翼型叶片和非封闭翼型叶片升力和拉力系数的性质和变化范围的差异。对一种非封闭翼叶垂直轴向风力机的转子模型进行了研究,证实了其在低风速下仍具有自启动和可操作性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Rotors of Vertical-Axial Wind Turbines Assembled in Bearings and Aerodynamic Characteristics of a Blade with Unclosed Wing Profile
Abstract In world practice, traditional blades used in high-speed wind turbines, both horizontal-axial and vertical-axial, have a wing-shaped profile. However, for horizontal-axial wind turbines, blades with such a profile have a fairly narrow range of operating values of the angle of attack of the incoming air flow and a low value of the moment of pulling from place. As for vertical-axial wind turbines, the self-starting of the rotor with wing blades is completely absent and additional devices are needed to start the rotor into operation. In order to ensure the self-starting of the rotor and the operation of the wind turbine at high and low wind speeds, a new shape of the blade profile was developed, called non-closed wing profile. The concept of the development is that the blade should have a configuration in which the pulling force is involved at the beginning of the movement, and then, with the establishing of the movement, a lifting force would arise, which acquires a prevailing character in the operating mode. The article presents the results of experimental studies of the aerodynamic characteristics of the developed non-closed wing blades. One of the results obtained is to determine the effect of the thickness of the blade profile on the range of values of subcritical angles of attack of the incoming air flow and the differences between the nature and range of changes in the coefficients of lifting force and pulling force in a traditional wing blade and a blade with a non-closed wing profile. Studies of the rotor model of a vertical-axial wind turbine with non-closed wing blades have confirmed the presence of its self-starting and operability even at low wind speeds.
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来源期刊
CiteScore
4.30
自引率
13.30%
发文量
48
审稿时长
10 weeks
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