Integrated Optimization Over Configuration With Sewless Flap And Traditonal Slat

This thesis presents a numerical simulation and optimization on two-dimensional high-lift device.Firstly CFD-based design optimization techiniques including basic CFD theory, basic principles of differential evolution algorithm, aerodynamic shape optimization based on CFD and its flowchart, are summarized. Then numerical methods used in this thesis are experimented numerically, computing grid parameters and solver parameters are then confirmed. Then maximum lift coefficient of two-dimensional sewless high-lift device is optimized by using differential evolution algorithm and CFD techniques and surrogate model. Two optimization stratages are used based on the fact that the device is composed of leading flap and trailing flap:(1) serial optimizing trailing-edge flap and leading-edge slat (2) integrated optimizing trailing-edge flap and leading-edge slat. Lastly comparison between effects superimposed of the former two methds and the latter one is conducted.