赵宗翰, 贾娅娅, 刘庆宽, 吕孟浩, 刘念. 雷诺数和湍流度综合影响下翼型气动性能试验研究[J]. 工程力学, 2023, 40(S): 313-318. DOI: 10.6052/j.issn.1000-4750.2022.06.S039
引用本文: 赵宗翰, 贾娅娅, 刘庆宽, 吕孟浩, 刘念. 雷诺数和湍流度综合影响下翼型气动性能试验研究[J]. 工程力学, 2023, 40(S): 313-318. DOI: 10.6052/j.issn.1000-4750.2022.06.S039
ZHAO Zong-han, JIA Ya-ya, LIU Qing-kuan, LYU Meng-hao, LIU Nian. EXPERIMENTAL STUDY ON AERODYNAMIC PERFORMANCE OF AIRFOIL UNDER COMPREHENSIVE INFLUENCE OF REYNOLDS NUMBER AND TURBULENCE DEGREE[J]. Engineering Mechanics, 2023, 40(S): 313-318. DOI: 10.6052/j.issn.1000-4750.2022.06.S039
Citation: ZHAO Zong-han, JIA Ya-ya, LIU Qing-kuan, LYU Meng-hao, LIU Nian. EXPERIMENTAL STUDY ON AERODYNAMIC PERFORMANCE OF AIRFOIL UNDER COMPREHENSIVE INFLUENCE OF REYNOLDS NUMBER AND TURBULENCE DEGREE[J]. Engineering Mechanics, 2023, 40(S): 313-318. DOI: 10.6052/j.issn.1000-4750.2022.06.S039

雷诺数和湍流度综合影响下翼型气动性能试验研究

EXPERIMENTAL STUDY ON AERODYNAMIC PERFORMANCE OF AIRFOIL UNDER COMPREHENSIVE INFLUENCE OF REYNOLDS NUMBER AND TURBULENCE DEGREE

  • 摘要: 如何精确地预测风力机翼型的气动性能,是目前设计优良的风力机叶片需要解决的一个关键问题。以大型风力机专用翼型NREL S810为研究对象,采用风洞试验测压方法,分析了高、低雷诺数下,湍流度对翼型气动性能的影响特性。结果表明:随着来流湍流度的增大,翼型的升力系数和阻力系数均呈先增大后减小的变化趋势,当湍流度为4.6%时增加至最大,之后开始下降;当湍流度小于11%时,随着雷诺数的增加,升力系数、阻力系数均增加;当湍流度增大至11%以上后,随着雷诺数的增加,升力系数、阻力系数均减小;随着雷诺数的增加,最大升阻比先增大再减小,并且最大升阻比对应的攻角呈先前移再后移的趋势。

     

    Abstract: How to accurately predict the aerodynamic performance of wind turbine airfoils is a key problem to be solved for well-designed wind turbine blades. The research object is NREL S810 which is a special airfoil for large wind turbine, and pressure measurement method of wind tunnel is adopted. The influences of turbulence intensity on aerodynamic performance of airfoil at different Reynolds numbers are analyzed. The results show that the lift coefficient and drag coefficient of the airfoil increase at first and then decrease with the increase of turbulence intensity. When the turbulence intensity is 4.6%, they increase to the maximum and then begin to decrease. When the turbulence intensity is less than 11%, the lift and drag coefficients increase with the increase of Reynolds number. When the turbulence intensity increases to more than 11%, the lift and drag coefficients decrease with the increase of Reynolds number. With the increase of Reynolds number, the maximum lift-drag ratio increases first and then decreases, and the angle of attack corresponding to the maximum lift-drag ratio moves forward first and then moves back.

     

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