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10/25/2009
On October 25, 2009, Advanced Dynamics Corporation released the Word's first multi-disciplinary, multi-physics, multi-scale and multi-fidelity analysis amd design optimization (4MAO) ...... |
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OPT:
The OPT optimization module in ASTE-P is aimed to provide the optimized solution of aerodynamic shape in the aircraft design. In the current version, the aerodynamic shape optimization involves two parts: (1) airfoil optimization design and (2) 3D wing optimization. All the processes of optimization design are based on high-fidelity solvers. Many efficient numerical optimization algorithms are used in the optimization design scheme, such as classical gradient based optimization algorithms, sequential quadratic programming (SQP), and genetic algorithm (GA). Also, for the sake of a higher efficiency, the BP Neural Network is used as a low computation cost model in the earlier steps. The airfoil optimization design is aimed to achieve specified performance with a constraint on thickness, or pitching moment, or off-design performance, or other constraints. The process of airfoil design proceeds from a knowledge of the boundary layer properties and the relation between geometry and pressure distribution. The goal of an airfoil design varies. Some airfoils are designed to produce low drag and others may need to produce low drag while producing a given amount of lift. In some other cases, the drag does not really matter - it is maximum lift that is important. In the 3D wing design optimization, the user can search for the planform that minimizes the structural weight, drag while maximizes the lift coefficient. Moreover, the aeroelastic effect can be incorporated to determine the optimal airfoil section and wing planform.
Pressure contour of the RAE2822 airfoil |
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