Aerodynamic Shape Optimization of a Sedan Based on Approximate Model

Bo Yang; Xing Jun Hu; Lei Liao; Xu Yan; Zhi Ming Zhao; Jian Ye

doi:10.4028/www.scientific.net/AMM.415.590

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 415Aerodynamic Shape Optimization of a Sedan Based on...

Aerodynamic Shape Optimization of a Sedan Based on Approximate Model

Abstract:

Morphing surface mesh employing a parametric model for the aerodynamic shape optimization of a sedan is presented. This study solved the problem of non-linear deformation in modeling surface morphing by volume mesh, and solved the divergence problem due to bad mesh quality, using automatic grid generation method based on CAD model, in calculation. The optimization process consists of three stages: Design of Experiments (DOE), Approximate Model, and optimization algorithm execution. The optimization process was realized by an automatic optimization system consisting of multiple software platforms. The optimal model's aerodynamic drag coefficient is 10.56% decreased though optimization, and the hood is identified as the major factor in this research.

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Periodical:

Applied Mechanics and Materials (Volume 415)

Pages:

590-594

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.415.590

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Online since:

September 2013

Authors:

Bo Yang, Xing Jun Hu, Lei Liao, Xu Yan, Zhi Ming Zhao, Jian Ye

Keywords:

Aerodynamic, Approximate Model, Mesh Morphing, Optimization

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