03.1 - Aerodynamics – CFD Methods and Validation
AERODYNAMICS CHARACTERISTICS STUDY ON A NATURE LAMINAR FLOW AIRFOIL OF NEAR-SPACE VEHICLE AT LOW REYNOLDS NUMBERS
F. Cui, Innovation & Research Institute of HIWING Technology Academy, China; H. Zhang, HIWING Technology Academy, China
In order to develop high attitude and low speed UAV, numerical computations of airfoil were used to analyze the aerodynamic characteristics of high-lift airfoil with high camber in a range of low Reynolds number. The coupled method with boundary layer transition model and CFD method based on RANS were carried out to study the aerodynamic performance of the foil. Results indicate that with the increase of attack angle, the transition point moves from the trailing edge to leading edge. The comparison of e-N method, ?-Re?t transition model method and experimental results were performed to illuminate the influence of transition location on aerodynamic analysis of natural laminar flow airfoil.