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�������պ����ѧѧ�� 2006, Vol. 32 Issue (02) :139-143    DOI:
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Discussion of integral technique for aerodynamics calculation
Liu Jie, Zhu Ziqiang, Chen Zemin, Wu Zongcheng*
School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� A method called wake integration for the aerodynamics evaluation was discussed. Based on Euler equations to get the fluid field solution, this method applies the momentum theorem to a control volume that encloses an aircraft and it is improved from the traditional far field integration method. By doing integral computation on the wake surface that is down from the aircraft and vertical to the velocity of far field, it can get the lift, induced drag, wave drag and the total drag. This method is advantaged to the aerodynamics calculation for the aircraft having the complicated configuration and it can decompose the total drag by physical causes. Consequently the designer can be aware of more details about the aerodynamics of the configuration in the design. Some methods to improve the accuracy and efficiency of wake integration were discussed. The results of the computation demonstrate that the method and improved technique are correct and useful in the aircraft design.
Keywords�� aerodynamics calculation   wake integration   surface integration   drag decomposition     
Received 2005-01-04;

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����, ����ǿ, ������, ���ڳ�.����������Ļ��ּ�������[J]  �������պ����ѧѧ��, 2006,V32(02): 139-143
Liu Jie, Zhu Ziqiang, Chen Zemin, Wu Zongcheng.Discussion of integral technique for aerodynamics calculation[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(02): 139-143
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2006/V32/I02/139
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