摘要An experimental investigation is carried out to study the flow separation behaviors of a variable camber airfoil. The aerodynamic load measurements and related flow visualization show that there are two types of stalls caused by the deformation on the camber: the leading-edge stall and the trailing-edge stall. Static measurements of aerodynamic force show a drastic leading-edge stall, while the serial measurements on an airfoil with camber deformation illustrate a trailing-edge stall and gradual bending-over on the aerodynamic coefficient curve. Under flow separation circumstances, the flow structure is related not only to current boundary conditions, but also the previous flow characteristics, so the quasi-steady aerodynamic characteristics are significantly distinct from those of the static measurements.
Abstract：An experimental investigation is carried out to study the flow separation behaviors of a variable camber airfoil. The aerodynamic load measurements and related flow visualization show that there are two types of stalls caused by the deformation on the camber: the leading-edge stall and the trailing-edge stall. Static measurements of aerodynamic force show a drastic leading-edge stall, while the serial measurements on an airfoil with camber deformation illustrate a trailing-edge stall and gradual bending-over on the aerodynamic coefficient curve. Under flow separation circumstances, the flow structure is related not only to current boundary conditions, but also the previous flow characteristics, so the quasi-steady aerodynamic characteristics are significantly distinct from those of the static measurements.
YANG Wen-Chao,WANG Hui,YANG Jian-Ting,YANG Ji-Ming**. Characterization of the Flow Separation of a Variable Camber Airfoil[J]. 中国物理快报, 2012, 29(4): 44701-044701.
YANG Wen-Chao,WANG Hui,YANG Jian-Ting,YANG Ji-Ming**. Characterization of the Flow Separation of a Variable Camber Airfoil. Chin. Phys. Lett., 2012, 29(4): 44701-044701.
[1] Lissaman P B S 1983 Ann. Rev. Fluid Mech. 15 223[2] Mueller T J and DeLaurier J D 2003 Ann. Rev. Fluid Mech. 35 89[3] Ishak A 2009 Chin. Phys. Lett. 26 034701[4] Hoffmann Jon A 1991 AIAA J. 29 9[5] Yarusevych S, Sullivan PE and Kawall JG 2009 J. Fluid Mech. 632 245[6] Munday D and Jacoby J 2002 J. Aircraft 39 1[7] Gerontakos P and Lee T 2008 Exp. Fluids 45 955[8] Lian Y and Shyy W 2007 AIAA J. 45 1501[9] Bansmer S, Radespiel R, Unger R, Haupt M and Horst P 2010 AIAA J. 48 1959[10] Szodruch J and Hilbig R 1988 Prog. Aerospace Sci. 25 297[11] Gandhi F and Anusonti-Inthra P 2008 Smart Mater. Struct. 17 015025[12] Anderson J D 2007 Fundamentals of Aerodynamics (New York: McGraw-Hill Education)[13] Liu Y, Yang W C and Yang J M 2011 J. Visualization 14 141
2012, Vol. 29 
