Correction of Reynolds number effect for wind-tunnel model with flying wing

Abstract

Abstract A method of Re (Reynolds number, Re) effect correction based on data of wind-tunnel test for flying wing is proposed in this paper. By investigating change laws for longitudinal aerodynamic and moment coefficient, corrective parameters, correction equations and acquisition of correction quantity are introduced. And at the same time, CFD simulations at different Re are carried out to obtain the evidence of what Re does to aerodynamic characteristics and corrective parameters. To reduce fitting error based on polynomial functions, fitting equations of power exponential function are adopted to obtain correction for all corrective parameters. According to the correction quantities and correction equations, the data for wind-tunnel model is corrected to full-scale model. To verify the present method, the results will be compared with result of supercharging wind-tunnel test.