Gurney襟翼对风力提水机风轮性能影响的数值模拟  

Numerical Simulation of Inpact of Gurney Flap on Rotor Performance of Wind-driven Water Pumping Machine

作　　者：周鑫[1] 郑源[1] 周嘉言 

机构地区：[1]河海大学能源与电气学院,江苏南京211100

出　　处：《水电能源科学》2017年第4期173-176,共4页Water Resources and Power

摘　　要：风力提水机在我国经过严格的生产考核运行和多年的实际应用,产品质量基本可靠,有些机组的水平达到或处于国际领先地位。针对风力提水机的应用,在来流风速3~14m/s、攻角4°~14°范围内,对装有不同高度襟翼的风轮采用Fluent软件进行模拟计算,比较分析其气动性能和叶片周围流场分布的差异,研究Gurney襟翼的增升原理。结果表明,Gurney襟翼有效增加了风轮的输出功率,特别是在大攻角、较高风速情况下,其中2%弦长高度的襟翼增升效果最好,并分析获得风轮输出功率增大的主要原因为襟翼后方出现的卡门涡街和襟翼前面的角涡。The wind-driven water pumping machine has been assessed strictly during its production and operation in our country. It has been used in practice for many years and its quality is stable on the whole. The level of some units has reached or led an international position. For application to wind-driven water pumping machine, under the conditions of 3-14 m/s coming wind speed and 4°-14° angle of attack, rotor with different height flaps was simulated by the FLUENT software. The principle of lift enhancement of Gurney flap was studied by comparing the differences between their aerodynamic performance and pressure distribution. The results show that Gurney flap can effectively increase output power of the rotor, especially in the condition of large angle of attack and high wind speed, Gurney flap with 2%chord height has the best performance. It finds out that the Karman vortex behind the flap and the corner vortex in front of the flap are the main reason for the enhancement of output power of the rotor.

关 键 词：GURNEY襟翼 风力提水机 风轮叶片 数值模拟 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程]