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�������պ����ѧѧ�� 2008, Vol. 34 Issue (05) :487-490    DOI:
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Analysis of aerodynamics characteristic of flexible wing caused by deflection
Zhang Hua, Ma Dongli, Ma Tielin*
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ ��Դ�չ�ұ�ȫ���ϲ��ϻ���ķ����Ծ�������Ӧ��Ϊ,����CFD/CSM(Computational Fluid Dynamics/Computational Structural Mechanics)����Ϸ���,ʹ����άN-S���̺ͽṹ��ѧ�����Լ����������ɼ�����ѹǿ��ֵ����,ͨ���߾��ȵ���ֵģ��,����˴�չ�ұ����Ի����ڽṹ���η����Ա���״̬�µķ����Ծ�������Ӧ����.�����ֱ�Ե��͵Ĵ�չ�ұȸ��ϲ���ǰ�ӻ���ͺ��ӻ�����������,����������,��ǰ�������,�����������ϵ�����Խ���,����Ƚ���,����ƫ���˸��Ի������Ƶ�,�����Ի������������б�����Կ���.
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Abstract�� A high-fidelity numerical simulation was presented for the flexible high-aspect ratio composite wing because of its high-speed nonlinear aeroelastic behavior. The fluid-structure interaction procedure used a loosely-coupled methodology. The compressible flow was modeled using the 3-D N-S equations on a deformable mesh, and the computational structural mechanics modeled in a steady analysis with geometrically-nonlinear effects. The transfer of distributed loads and displacements at the fluid-structure interface was based on detailed 3-D representations. Using this approach, a representative high-aspect-ratio composite forward-swept and backwards-swept wing were investigated for the steady flight conditions. Finally, the solution was implemented for the loosely-coupled fluid-structure interaction problem. Compared with the forward-swept wing, the lift coefficient of backwards-swept wing decreases obviously, the lift-drag ratio reduces markedly, which is obviously different from the rigid wing, so it must be considered during the design of a flexible wing.
Keywords�� wings   aerodynamics   flexible structures   deflection     
Received 2007-04-19;
About author: �� ��(1983-),��,�Ĵ�������,˶ʿ��,badwaer@163.com.
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�Ż�, ����, ������.���Ա��ζ����Ի�����������Ӱ�����[J]  �������պ����ѧѧ��, 2008,V34(05): 487-490
Zhang Hua, Ma Dongli, Ma Tielin.Analysis of aerodynamics characteristic of flexible wing caused by deflection[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(05): 487-490
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2008/V34/I05/487
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