A Comparison of Computational and Experimental Fluid Dynamics Studies between Scaled and Original Wing Sections, in Single-Phase and Two-Phase Flows, and Evaluation of the Suggested Method

The correlation between computational fluid dynamics (CFD) and experimental (EFD) is crucial for the behavior prediction of aerodynamic bodies. This paper’s objective twofold: (1) to develop a method that approaches commercial CFD codes their link with EFD in more efficient way, using downscaled model, (2) investigate effect rain on wing. More specifically, we one-phase two-phase flow over typical wing section NACA 641-212 airfoil, code Ansys Fluent. Two models were developed; first model represents original dimensions wing, while second 23% original. response air air–water primarily studied, as well impact efficiency due existence phase. For simulations, pressure-based solver second-order upwind scheme spatial discretization Spalart–Allmaras (SA) turbulence utilized. Meanwhile, air–water, discrete phase (DPM) wall–film boundary conditions surface two-way coupling continuous was considered. simulated water droplets injected phase, Euler–Lagrange approach. constructed accordance tested subsonic wind tunnel, 3D printing technology which reduced experiment expenses. presence proven deteriorate factors compared flow, expected. three-stage comparison results showed very good convergence, both single flow. can lead conclusion rapid low-cost study estimation performance objects high accuracy feasible suggested method.