Aerodynamic Optimization Design of Wing-Body Configuration with Static Aeroelasticity Effect Consideration

Based on the control theory and the structure finite element analysis, the aerodynamic optimization design for the wing-body configurations with the static aeroelasticity effect was studied. A numerical simulation method of the Navier-Stokes equations with the multigrid and the preconditioned analysis technologies is developed to save the time cost for the above design problem. An improved algebraic grid generation technology suitable for the complex wing-body configurations is developed by using the elliptical smoothing technology, the grid orthogonality control and the surface normal vector control, etc. Based on the Parametric Design Language (APDL) module in the ANSYS software, an effective analysis method of the aeroelasticity effect is developed which can process the structural model, the finite element grid generation, the loading and the exporting of the deformation and stress, etc. The continuous adjoint equations, the boundary conditions and the gradient analysis formulas are derived for the following design problems. Finally, an effective aerodynamic optimization design method for the wing-body configurations considering the static aeroelastic effect is developed by integrating the aerodynamic analysis, finite element analysis, the gradient analysis, the optimal arithmetic and the grid generation technology. Finally, several different design cases were tested. The corresponding results show the above method is effective.