Numerical Study of a Low Speed Wind Tunnel's Aerodynamic Performance and Its Optimization Design

Empirical formula and numerical study were used to predict the aerodynamic performance of a low speed circulating wind tunnel. The positions where the flow loss concentrated were the corners of the tunnel. The optimization design was carried out by using corner vanes. The results of empirical formula and numerical study of the optimized wind tunnel were agreed, which showed that the aerodynamic loss was obviously reduced by setting corner vanes.