离体射流对S809翼型气动性能的影响  

Flow Control of the Stalled S809 Airfoil With the Separated Jet Flow Device

作　　者：史旭阳 孙槿静 许斌[1,2] 黄典贵 SHI Xu-Yang;SUN Jin-Jing;XU Bin;HUANG Dian-Gui(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,PR China;Shanghai Key Laboratory of power energy in multiphase flow and heat transfer,Shanghai 200093,PR China)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]上海市动力工程多相流动与传热重点实验室,上海200093

出　　处：《工程热物理学报》2021年第3期601-610,共10页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51536006);上海市科委科研计划项目(No.17060502300)。

摘　　要：在Re=5×10^(6)的条件下,分别在S809翼型前缘点附近不同位置处设置离体射流装置,改变射流动量的大小和射流口宽度,探究其对S809翼型气动性能的影响。并通过流场分析,研究这种流动控制手段有效的物理机理。结果表明:在射流装置位置和射流口宽度固定时,射流动量的大小对控制效果影响显著;在S809翼型表面附近设置微小离体射流装置后,即使关闭射流(射流动量为零时),也具有一定的流动分离控制效果;当射流动量逐渐增大时,射流能明显的减小流动分离泡的大小,降低阻力系数,同时可以有效提升升力系数,使得翼型的气动性能得到进一步显著提升。值得指出的是,射流口宽度与射流装置的位置对流动控制效果也具有一定的影响。The flow control effect of a separated jet flow device set around the S809 airfoil suction surface at Re=5×10^(6) was discussed by numerical simulation.The momentum coefficient of jet flow,the length of jet-port and initial position of the separated jet flow device are three main parameters to be considered in this paper.A physical analysis of the flow fields is performed to illustrate the mechanisms of flow control for the improvement of airfoil aerodynamic performance.Numerical results suggest that:when the length of jet-port and initial position of the separated jet flow device were fixed,the momentum coefficient of jet flow has a significant impact on control effect:after the separated jet flow device set around the S809 airfoil suction surface,a small control effect can be achieved even the momentum coefficient of jet flow was set as zero;bigger momentum coefficient of jet flow corresponds to smaller scale of separation bubble,lower drag coefficient,higher lift coefficient and higher lift-to-drag ratio when the length of jet-port and initial position of the separated jet flow device were fixed.It is worth noting that the length of jetport and initial position of the separated jet flow device also have a significant impact on control effect.

关 键 词：离体射流 S809 主动流动控制 升阻比 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]