H-VAWT翼型的抛物线翼型理论及气动特性研究  

Research on parabolic airfoil theory and aerodynamic characteristics of H-VAWT airfoil

作　　者：张照煌[1] 胡德鹏 高迪 Zhang Zhaohuang;Hu Depeng;Gao Di(School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学能源动力与机械工程学院,北京102206

出　　处：《可再生能源》2022年第10期1358-1364,共7页Renewable Energy Resources

摘　　要：具有良好气动特性的翼型是风力机高效获能的关键。为提高H型垂直轴风力机(H-VAWT)的获能效率,文章提出了空气重量比拟空气压差建立H-VAWT抛物线对称翼型设计理论。随着常数C增大,抛物线翼型母线的相对厚度先迅速增大到25%后逐渐减小至1%,最大厚度位置从45.8%弦长处逐渐靠近前缘至26.1%弦长处。将选取的抛物线翼型母线等比为与NACA4系列对称翼型厚度相对应的翼型,利用XFOIL进行数值模拟和对比研究。结果表明:当C=10.21时,抛物线PWX0007MX-xx系列翼型的气动性能最高,其中分别等比为t/c=9%,t/c=12%,t/c=15%,t/c=18%和t/c=21%时,相较于常用NACA00XX系列同厚度翼型,最大升阻比分别提高了9.45%,5.56%,6.59%,6.59%和2.42%,最大升力系数分别提高了10.59%,9.79%,8.32%,8.65%和7.90%。An airfoil with good aerodynamic characteristics is the key to efficient energy harvesting of wind turbines.In order to improve the energy harvesting efficiency of H-VAWT,this paper proposes that the air weight is equal to the air pressure difference to establish the H-VAWT parabolic symmetric airfoil design theory.Obtained that as the constant C increases,the relative thickness of the parabolic airfoil generatrix increases rapidly to 25%and then gradually decreases to 1%.The maximum thickness position changes from 45.8%chord length to the leading edge to26.1%chord length.The parabolic airfoil busbar selected in the article is proportional to the airfoil corresponding to the thickness of the NACA4 series symmetrical airfoil,and XFOIL is used for numerical simulation and comparative research.The results show that:when C=10.21,the aerodynamic performance of the parabolic PWX0007MX-xx series airfoil is the highest,among which the equal ratios are t/c=9%,t/c=12%,t/c=15%,t/c=18%and t/c=21%,compared with HVAWT commonly used NACA00XX series airfoils of the same thickness,the maximum lift-to-drag ratio is increased by 9.45%,5.56%,6.59%,6.59%and 2.42%respectively,the maximum lift coefficient Increases by 10.59%,9.79%,8.32%,8.65%and 7.90%respectively.

关 键 词：风力机 H型垂直轴 抛物线翼型 气动性能 

分 类 号：TK81[动力工程及工程热物理—流体机械及工程]