To understand aerodynamic characteristics in aircraft development, CFD analysis is used in addition to wind tunnel testing. However, when evaluating the maximum lift coefficient, which is important for aircraft aerodynamic performance, unsteady separated flows need to be captured and analyzed, which is still difficult to predict using conventional CFD analysis technology. Therefore, Mitsubishi Heavy Industries, Ltd., in collaboration with Tohoku University, a CoE in this field, is validating the applicability of a CFD solver that implements the latest large-scale LES analysis technology to actual design issues with the aim of significantly improving the capability of unsteady separated flow analysis. In this report, the prediction accuracy improvement of the maximum lift coefficient was confirmed by the comparisons with the flight test results for SpaceJet.
