改进型格尼襟翼对不同实度的垂直轴风力机气动性能的影响  

Effect of modified Gurney flap on the aerodynamic performance of vertical axis wind turbine with different solidity

作　　者：朱海天 郝文星[1] 李春[1] 丁勤卫 ZHU Haitian;HAO Wenxing;LI Chun;DING Qinwei(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《能源研究与信息》2020年第4期187-193,共7页Energy Research and Information

基　　金：国家自然科学基金资助项目(51676131、51176129、51811530315)。

摘　　要：为了提升垂直轴风力机获能效率,为风力机叶片加装格尼襟翼并对格尼襟翼进行改进,通过数值模拟研究了两种格尼襟翼对不同实度的垂直轴风力机气动性能的影响。研究发现:当尖速比为3.1、实度为0.250时,原始格尼襟翼可提升10.92%的风能利用系数,改进型格尼襟翼可提升17.92%。在不同实度,改进型格尼襟翼在高尖速比时可较好地提升气动性能,而原始格尼襟翼在低尖速比时可较好地提升气动性能。当实度增大时,由于叶片间尾迹影响加剧而导致风能利用系数下降,但载荷波动情况得到改善;当实度为0.416时,载荷波动最小。To improve the energy extraction efficiency of vertical axis wind turbine(VAWT),the Gurney flap(GF)and modified GF were mounted on the blades of VAWT.The effect of two kinds of GF on the aerodynamic performance of VAWT with different solidity was investigated by numerical simulation.The results showed that the clean GF could increase the power coefficient by10.92%,compared to the 17.92%increment of the modified GF at TSR of 3.1 and solidity of 0.25.At different solidity,the modified GF could improve the aerodynamic performance at high TSR while the clean GF could improve the aerodynamic performance at low TSR.the increased solidity caused the declined power coefficient due to the intense interaction between the trailing tracks of blades.However,the load fluctuation was improved,and the lowest load fluctuation was achieved at the solidity of 0.416.

关 键 词：垂直轴风力机 格尼襟翼 数值模拟 实度 气动性能 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]