作者
Trent W Lukaczyk, Paul Constantine, Francisco Palacios, Juan J Alonso
发表日期
2014
图书
10th AIAA multidisciplinary design optimization conference
页码范围
1171
简介
In the field of optimal shape design, we are interested in iteratively changing an aerodynamic shape in order to improve the performance of an aircraft. In realistic three-dimensional design problems, it is typical for shape optimizations to require hundreds of design variables. 1, 2 The core impetus for these large dimension spaces is that we cannot know a-priori which variables are needed to most efficiently optimize the design. We thus construct parameterizations with many variables in order to increase the chance that we reach a useful result. However, this increases the cost required to find an optimum, and increases the possibility that multi-modality appears in complex design problems. Today’s optimization techniques manage this “curse of dimensionality” in different ways. Local optimizers such as gradient-based optimization techniques efficiently find local minima when paired with adjoint-based sensitivity …
引用总数
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TW Lukaczyk, P Constantine, F Palacios, JJ Alonso - 10th AIAA multidisciplinary design optimization …, 2014