华中科技大学学报（自然科学版）2024，Vol.52Issue(7)：145-150,6.DOI:10.13245/j.hust.240145
双层翼型直叶片垂直轴风力机动态气动特性研究
Research on dynamic aerodynamic characteristics of H-VAWT with double-layer airfoils
摘要
Abstract
In order to further improve the aerodynamic performance of H type vertical axis wind turbine(H-VAWT)under high angle of attack conditions,the influence of interaction between double-layer airfoils on the boundary layer of airfoils was considered.Based on numerical simulation and orthogonal experimental methods,the effect of the main structural parameters of double-layer airfoils on the aerodynamic characteristics of H-VAWT was investigated.The results show that the spacing of the double-layer airfoils is the main factor that affects the aerodynamic performance of the H-VAWT.With the optimal spacing between double-layer airfoils and tip speed ratio,the average contribution of the inner airfoil to the torque coefficient of the H-VAWT is about 29.5%,while increasing the average contribution of the outer airfoil to the torque coefficient by 6.9%.The inner airfoil of a double-layer airfoils H-VAWT improves the flow field characteristics of the outer airfoil as it improves the torque coefficient.The interaction of the inner and outer airfoil can effectively reinforce the aerodynamic performance of the H-VAWT,while the slit structure of double-layer airfoils helps to increase the fluid kinetic energy,the maximum increase in flow velocity near the trailing edge of the airfoilpressure surface is 11%,when the tip speed ratio is 3,which increases the pressure difference between the suction surface of the inner and outer airfoil pressure surfaces and can effectively suppress the boundary layer separation between the suction surface of the inner and outer airfoil.关键词
垂直轴风力机/双层翼型/气动特性/数值模拟/正交实验Key words
vertical axis wind turbine/double-layer airfoils/aerodynamic characteristics/numerical simulation/orthogonal experiment分类
能源科技引用本文复制引用
李寿图,何坤雲,岳念西,李晔..双层翼型直叶片垂直轴风力机动态气动特性研究[J].华中科技大学学报（自然科学版）,2024,52(7):145-150,6.基金项目
国家自然科学基金资助项目(12162022,12062012) （12162022,12062012）
甘肃省教育厅创新基金资助项目(2021A-029) （2021A-029）
甘肃省自然科学基金资助项目(22JR5RA267) （22JR5RA267）
甘肃省科技专员专项(22CX8GA126). （22CX8GA126）
