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�������պ����ѧѧ�� 2006, Vol. 32 Issue (06) :716-720    DOI:
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Finite volume method in thermal analysis of avionics
Fu Guicui, Wang Xiangfen, Jiang Tongmin*
Dept. of System Engineering of Engineering Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The influence of heat to the system reliability was introduced. The merits and drawback of numerical methods in solving temperature distribution were compared. In order to solve the problem of avionics of high reliability which requires highly precise result and rapidly computational velocity in thermal analysis, a computed approach of the finite volume method (FVM) to solve the temperature distribution was devoloped. The mathematical model of temperature distribution was built based on typical avionics and its boundary condition was given. Then the control equation was discretized by means of the FVM. The mesh division, the process of discretization and the disposal of boundary were included. The temperature distribution was calculated with an example. The comparison between the result of calculation and the result of measurement demonstrates a high precision of thermal analysis. The validity of this method was verified. The reason of calculated error was indicated and a reasonable proposal about further thermal design based on the result was offered in the end.
Keywords�� reliability   avionics   thermal analysis   finite volume method   temperature distribution     
Received 2005-06-29;
About author: �����(1968-),Ů,������˳��,������, fuguicui@sina.com.cn.
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�����, �����, ��ͬ��.�߿ɿ��Ժ��յ����豸�ȷ����е����������[J]  �������պ����ѧѧ��, 2006,V32(06): 716-720
Fu Guicui, Wang Xiangfen, Jiang Tongmin.Finite volume method in thermal analysis of avionics[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(06): 716-720
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2006/V32/I06/716
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