Towards Accurate Simulation of Aircraft High-Lift Flows with One- and Two-Equation Turbulence Models

The prediction of aircraft high-lift flows is a challenge of practical interest to the aerospace industry. For configurations that include multiple elements such as leading edge slats and trailing edge flaps, the flow physics... [ view full abstract ]

The prediction of aircraft high-lift flows is a challenge of practical interest to the aerospace industry. For configurations that include multiple elements such as leading edge slats and trailing edge flaps, the flow physics can be particularly challenging for current-generation CFD codes and turbulence models. Through assessment of the CFD capabilities on the 2nd AIAA CFD High-Lift Prediction Workshop test case, a variety of one- and two-equation turbulence models were explored. It was found that the Spalart-Allmaras turbulence model with the rotation correction of Dacles-Mariani et al. and the Wilcox 1988 k-omega turbulence model with Schwarz realizability constraint are effective to capture high-lift flow physics, although more test cases with improved meshing need to be pursued to make general conclusions about the most suitable turbulence model for high-lift flow simulations.