로터 설계익형 풍동시험 결과 검증을 위한 전산해석

A Reynolds-Averaged Navier-Stokes code is simultaneously coupled with the transition transport model of Langtry and Menter and applied to the numerical prediction of aerodynamic performance of the designed airfoils. Numerical prediction results for KU112F and KU109C airfoils are validated by experimental data obtained from a transonic wind tunnel. Drag coefficients from the experiment are better correlated to the numerical prediction results using a transition transport model rather than the fully turbulent simulation results. Maximum lift coefficient and drag divergence at the zero-lift condition with Mach number are investigated to evaluate the aerodynamic performance of the designed airfoils. Numerical and experimental data show that both airfoils achieve better performance than the baseline airfoils.