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Benchmark aerodynamic shape optimization with the POD-based CST airfoil parametric method

机译：基于POD的CST翼型参数化方法进行基准空气动力学形状优化

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This paper conducts a benchmark aerodynamic shape optimization with the developed POD-based CST airfoil parametric method. The POD analysis transforms the basis functions of the CST parametric method into reduced orthogonal POD basis functions which are used to describe the geometric variation of the aerodynamic shape. A benchmark aerodynamic shape optimization for drag minimization of RAE2822 airfoil in transonic viscous flow provided by AIAA aerodynamic design optimization discussion group is used to verify the optimization effect of the developed parametric method. The optimized results indicate that developed parametric method can maintain almost the same ability to cover potential airfoils with much fewer parameters as the original high-dimensional CST method does, which can overcome the contradiction of high-dimensionality of design parameters and increase of optimization difficulty well. Moreover, the benchmark optimized results verify the optimization effect of the developed method by comparing with benchmark results optimized by other international counterparts in the field of aerodynamic shape optimization. (C) 2018 Elsevier Masson SAS. All rights reserved.
机译：本文使用已开发的基于POD的CST翼型参数化方法进行了基准空气动力学形状优化。 POD分析将CST参数方法的基函数转换为简化的正交POD基函数，用于描述空气动力学形状的几何变化。由AIAA空气动力学设计优化讨论小组提供的用于使跨音速粘性流中的RAE2822翼型阻力最小化的基准空气动力学形状优化用于验证所开发参数方法的优化效果。优化结果表明，与原先的高维CST方法相比，所开发的参数化方法能够以较少的参数保持几乎相同的能力覆盖潜在的机翼，从而可以克服设计参数高维化的矛盾，并最大程度地提高了优化难度。 。此外，基准优化结果通过与空气动力学形状优化领域中其他国际同行优化的基准结果进行比较，验证了所开发方法的优化效果。 （C）2018 Elsevier Masson SAS。版权所有。

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