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Variable-fidelity optimization applied to wing-body configuration
Zhou Ting, Wu Zongcheng, Chen Zemin, Zhu Ziqiang*
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Based on the trust region method, a variable-fidelity optimization method is developed to effectively manage and utilize low-fidelity models and high-fidelity models. The low-fidelity model was employed to build an approximation model in optimization process, while the high-fidelity model was used to correct the optimization approximation model and make the optimization results converged to high-fidelity model optimization results. The viscous and inviscid iteration of full-potential method and boundary layer method was chosen as the low-fidelity model and the multi-grid Navier-Stokes method was utilized as the high-fidelity model to optimize the wing-body configuration. The optimization results show that the method has not only high efficiency, but also good accuracy, therefore, is of practical meaning.
Keywords�� variable-fidelity optimization   trust region   wing-body configuration   design     
Received 2011-06-06;
����, ���ڳ�, ������, ����ǿ.���������ı���Ŷ��Ż����[J]  �������պ����ѧѧ��, 2012,V(7): 962-965
Zhou Ting, Wu Zongcheng, Chen Zemin, Zhu Ziqiang.Variable-fidelity optimization applied to wing-body configuration[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V(7): 962-965
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2012/V/I7/962
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