改进的直叶片垂直轴风机气动特性及参数影响  

Aerodynamic Performance and Influence Factors of Improved Straight Blade Vertical Axis Wind Turbine

作　　者：刘利琴[1] 吕鑫鑫 安笛[2] 郭颖[1] 陈迪郁 LIU Liqin;LYU Xinxin;AN Di;GUO Ying;CHEN Diyu(State Kay Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;Tianjin Navigation Instruments Research Institute,Tianjin 300131,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]天津航海仪器研究所,天津300131

出　　处：《中国海洋平台》2021年第1期26-33,41,共9页China offshore Platform

基　　金：国家自然科学基金(编号:51879190)。

摘　　要：对现有的直叶片垂直轴风机叶片进行改进,提出新型螺旋型垂直轴风机,基于计算流体动力学方法研究风机的气动载荷特性,进行参数影响分析。建立风机三维气动载荷计算模型,验证模型的可靠性。计算分析新型螺旋型风机的气动载荷特性,分析扭曲角、叶尖速比、弦长和桨距角等参数对螺旋型风机气动特性的影响,确定最佳风机结构参数。研究表明,与直叶片风机相比,螺旋型风机有效减小瞬时转矩系数的波动性,并提高功率系数。该研究为螺旋型风机叶片结构参数的选择提供了理论指导。New helical Vertical Axis Wind Turbine(VAWT)is proposed on the basis of straight blade VAWT.The dynamic numerical simulation for VAWT is completed with the computational fluid dynamics to study the aerodynamic load characteristics and analyze the influence factors.A three-dimension numerical model is established and the reliability is verified.The aerodynamic load of the helical VAWT is calculated and the effects of helical twist angle,tip speed ratio,chord length and pitch angle on the aerodynamic performance of VAWT are analyzed to seek out the optimal structural parameters.The investigation shows that comparing to the straight blade VAWT,the helical VAWT could reduce the volatility of instantaneous torque coefficient and improve the power coefficient effectively.The research could provide theoretical guidance to select the structural parameters of helical VAWT.

关 键 词：螺旋型垂直轴风机 气动载荷 计算流体动力学 

分 类 号：TM315[电气工程—电机]