2D Surrogate Model Design Of Wing Lift Distribution

Surrogate model is one of key elements of Multidisciplinary Design Optimization (MDO). It is used to provide approximate objective value by replacing time-consuming simulation evaluations or experiments, and it can be easily integrated into a MDO Framework. When dealing with a wing aerodynamic-structure optimization design, surrogate model of wing lift distribution is needed.The surrogate models of wing lift distribution published in the recent were reviewed in this thesis. A new approach to obtain 2D surrogate model of wing lift distribution was proposed, in which the radial basis function and shape function were induced. The shape function was used to transformed arbitrary plan of a wing into rectangle. Also the process to get the surrogate model was introduced thoroughly. The wing left of a cruise missile was computed and simulated by the proposed 2D surrogate model. The prediction results demonstrated the feasibility and effectiveness of the proposed method.