Unsteady Flow Simulation of a High-Lift configuration using a Lattice Boltzmann Approach

摘要

A Lattice-Boltzmann Method (LBM) based approach combined with a very large eddy simulation (VLES) turbulence modeling is used for the unsteady simulation of the flow field around the high-lift configuration used in the first AIAA high-lift prediction workshop. The numerical approach as well as the meshing technique is briefly described. The simulations are conducted first for some selected angle of attacks and configurations prescribed within the workshop and compared to the available experimental results. Several investigations are presented including a resolution study, the influence of added geometrical details and the laminar to turbulence transition in the simulation. In a second step the simulation domain is extended to include the wind tunnel walls in an effort to predict the blockage and installation effects of the wind tunnel and compare with the uncorrected force and moment measurements.