Aerodynamic Shape Optimization Using Feature based CAD Systems and Adjoint Methods
Aerodynamic Shape Optimization Using Feature based CAD Systems and Adjoint Methods
复制标题
使用基于特征的 CAD 系统和伴随方法进行空气动力学形状优化
DOI:
10.2514/6.2017-3999
复制
发表时间:
2017
影响因子:
2.2
通讯作者:
Philip Hewitt
中科院分区:
文献类型:
--
作者:
Dheeraj Agarwal;S. Marques;T. Robinson;C. Armstrong;Philip Hewitt
This paper presents a CAD-based optimization framework using adjoint functions for aerodynamic design. In this work, the SU 2 code is used to obtain high-fidelity flow solutions and surface sensitivities using adjoint methods. This work proposes methodologies to exploit CAD models created using standard commercial modelling software like CATIA V5 in the optimization workflow. A formulation to obtain geometric sensitivities is introduced, enabling the calculation of gradients with respect to these CAD variables. The performance and robustness of the optimization framework is assessed using a range of inviscid and viscous problems. The results show the CAD parameterisation can be efficiently used in obtaining reliable optimums, while operating directly on feature based CAD systems.