摘要
为改善风力机翼型气动特性,提出吹吸结合射流(Suction-Blow Combined Jet, SBCJ)方式,以S809为基础翼型,研究在不同攻角、射流动量系数及开孔位置时SBCJ的控制效果,分析其控制机理和影响规律。结果表明:SBCJ可移除翼型吸力面低动量流体并改变尾缘库塔条件,从而显著增大翼面两侧压差,最终提升翼型气动性能;当射流动量系数较小时,翼型升力显著增大、修正阻力减小且流动分离减弱;当射流动量系数为0.01、吸气孔距前缘0.15c、吹气孔距尾缘0.2c、攻角为10°时,翼型修正升阻比提升率最大。
The Suction-Blow Combined Jet(SBCJ) mode was proposed to improve the aerodynamic characteristics of the wind wing. Based on the S809 airfoil, the control effect of SBCJ under different attack angles, jet momentum coefficients and opening positions was studied, and its control mechanism and influence rule was analysed. Results show that SBCJ can remove the low-momentum fluid on the suction surface of the airfoil and change the trailing edge Kutta conditions, which can significantly increase the pressure difference on both sides of the airfoil and finally improve the aerodynamic performance of the airfoil. When the jet momentum coefficient is small, the lift force of the airfoil increases significantly, while the correction resistance and the flow separation decrease. When the suction hole is 0.15c from the leading edge, the blow hole is 0.2c from the trailing edge and the attack angle is 10°, the modified lift-drag ratio of the airfoil increases the most.
作者
罗帅
缪维跑
刘青松
李春
LUO Shuai;MIAO Weipao;LIU Qingsong;LI Chun(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering,Shanghai 200093,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2021年第10期883-891,共9页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(51976131,52006148)
上海"科技创新行动计划"地方院校能力建设资助项目(19060502200)。
关键词
吹吸结合射流
流动分离
气动特性
流动控制
suction-blow combined jet
flow separation
aerodynamic characteristics
flow control
