Numerical Simulation for Changes in Aerodynamic Characteristics along the Spanwise of “Diamond back Wing
Based on the geometry shape and design parameters of the “Diamond back wing,the changes in aerodynamic parameters along the spanwise of “Diamondback wing at low Reynolds number are simulated by two-dimensional computational model which uses NACA6411 airfoil.The simulation results indicate that the Transition SST turbulence model have high accuracy and creditability in solving the problem of flowing around airfoil at low Reynolds number which is undemanding to stalling characteristics; The changes in aerodynamic characteristics along the spanwise of “Diamond back wing are mainly caused by two reasons,one is the high-pressure and low-pressure region of the lower surface of anterior airfoil which are formed by the high pressure around stagnation point at the leading edge and the differential pressure between the upper and lower surface of the posterior airfoil,the other is differential pressure change between the upper and lower surface of posterior airfoil caused by air blocking; When the vertical height difference of the anterior and posterior wing is 0,these effects are mainly reflected on the part of the leading edge distance between the anterior and posterior wing that is less than 350mm; When the value is greater than 350mm,aerodynamic performance achieves optimal and aerodynamic parameters keep almost unchanged.The synthesis looked that one of effective optimization methods for “Diamond back aerodynamic configuration is rational designing the leading edge distance between the tip chord of the anterior and posterior wing to reduce the proportion of unfavorable aerodynamic performance.
“Diamond back wing turbulence model aerodynamic characteristics changes along the spanwise numerical simulation
CHEN Junkui WANG Zhijun ZHANG Juanting ZHANG Lianbo WU Guodong
School of Mechatronics Engineering,North University of China,Taiyuan 030051,China National Key Laboratory for Electronic Measurement Technology,North University of China,Taiyuan 0300 School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100191,China
国际会议
2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)
上海
英文
1-9
2014-09-24（万方平台首次上网日期，不代表论文的发表时间）