J型翼型对Darrieus型直叶片垂直轴风力发电机性能的协同效应

IF 2.6 3区 工程技术 Q3 ENERGY & FUELS
Kabita Naik, N. Sahoo
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引用次数: 1

摘要

Darrieus型直叶片垂直轴风力涡轮机(SB VAWT)比大多数适用于具有低至中等风速的区域的其他VAWT更适合于发电。SB VAWT的安装面临启动问题,这限制了其在低风速环境中的适用性。启动问题主要是由于横截面叶片轮廓引起的,并且是叶片设计的关键参数。为了克服这个问题,旨在研究Darrieus型SB VAWT中具有不同开口率的J形翼型对起动转矩和空气动力学性能的影响。J形翼型的设计是通过去除传统NACA 4415翼型的上表面或下表面上朝向后缘的一部分而形成的。该分析显示,当Darrieus型SB-VAWT采用开口率为0.8的上切J形翼型,叶尖速比(TSR)为1.6时,最大功率系数为0.517。这些值高于相同TSR下常规NACA 4415翼型的功率系数(0.486)。SB-VAWT的性能较低,而它采用了较低切割的J形翼型。此外,本研究表明,当上切J形翼型的开口率从0.1到0.8变化时,SB-VAWT的功率和扭矩系数提高了约31%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synergistic Effect of J-shape Airfoil on the Performance of Darrieus Type Straight-Bladed Vertical Axis Wind Turbine
Darrieus type straight-bladed vertical axis wind turbines (SB-VAWTs) are more appropriate for generating electricity than other VAWTs mostly suitable for regions having low to medium wind speed. The installation of SB-VAWTs faces start-up problems, which limits its applicability in low wind speed environments. The start-up problem arises mainly due to the cross-sectional blade profile and is the crucial parameter for blade design. To overcome this issue, it is aimed to study the influence of the J-shape airfoil with various opening ratios in the Darrieus type SB-VAWTs in terms of starting torque and aerodynamic performance. The design of a J-shape airfoil is created by removing a portion towards the trailing edge of the conventional NACA 4415 airfoil on its upper or lower surface. This analysis displays a maximum power coefficient of 0.517 when the Darrieus type SB-VAWT utilizes upper cut J-shape airfoils with opening ratio of 0.8, at the tip speed ratio (TSR) of 1.6. These values are higher than the power coefficient (0.486) of conventional NACA 4415 airfoil at the same TSR. The SB-VAWT depicts a lower performance while it employs the lower cut J-shape airfoils. Furthermore, the present study demonstrates that the power and torque coefficient of SB-VAWT improves by about 31% when the opening ratio of upper cut J-shape airfoil is varied from 0.1 to 0.8.
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来源期刊
CiteScore
6.40
自引率
30.00%
发文量
213
审稿时长
4.5 months
期刊介绍: Specific areas of importance including, but not limited to: Fundamentals of thermodynamics such as energy, entropy and exergy, laws of thermodynamics; Thermoeconomics; Alternative and renewable energy sources; Internal combustion engines; (Geo) thermal energy storage and conversion systems; Fundamental combustion of fuels; Energy resource recovery from biomass and solid wastes; Carbon capture; Land and offshore wells drilling; Production and reservoir engineering;, Economics of energy resource exploitation
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