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�������պ����ѧѧ�� 2008, Vol. 34 Issue (05) :546-550    DOI:
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�������պ����ѧ ���շ��������������ص�ʵ����, ���� 100083
Performance evaluation and comparison of 2 porous laminated plates
Lü Dong, Tao Zhi, Deng Hongwu, Li Haiwang*
National Key Lab on Aero-Engine, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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ժҪ ��Գ����141�Ͳ��,�����һ������50�����������������,��161�Ͳ��.����ʵ�����ֵģ�����ϵİ취�о����������Ͳ��������ͻ��ȷ���IJ��.����ʵ�鲿�ֲ����˷���ʽ�����豸,�����˲�����±���ƽ������,�Լ������������ڽ������ʲ�,�õ�����Ӧ������ŵ���µIJ���������Ŭ������.����161ģ�����轵��20��,������ǿ5��.��һЩʵ�鹤��,������ά����������ѧ�����������-����ϴ�����ֵģ��,���ý������������ʵ��һ��,����ֵ��,����ͻ�����ʵ�����ֱ����5����30��.������ֵģ�����������Ƚ�������ģ���������ͱ����������ϵ���ֲ������ϸ�ڲ��.
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Abstract�� A new form of porous laminated plate (PLP), model 161, was put forth, which had 50% pin-fin quantity increasing compared with its conventional counterpart, model 141. The 2 models were studied on their flow resistance and heat transfer characteristics by experiment and numerical simulation. A thermal radiation heating facility was employed to maintain the heat flux on the PLP upper external surface, and the actual heating rate was calculated by the enthalpy difference between the inlet and outlet of the coolant. The external surface temperatures were arithmetically averaged. It was found that the model 161 had 20% less flow resistance and 5% more heat transfer than the model 141. The numerical simulation results were in good agreement with the experiment for the flow resistance. However, the discrepancy for the heat transfer was significant and a maximum deviation of 30% in Nusselt number existed, although the variation patterns were quite the same.
Keywords�� aerospace propulsion system   porous laminated plate   pin-fin   flow resistance   heat transfer     
Received 2007-04-17;
About author: �� ��(1979-),��,������ɽ��,��ʿ��,lvdong1979@163.com.
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����, ����, �˺���, ���.���ֲ�����ܶԱ�[J]  �������պ����ѧѧ��, 2008,V34(05): 546-550
L�� Dong, Tao Zhi, Deng Hongwu, Li Haiwang.Performance evaluation and comparison of 2 porous laminated plates[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(05): 546-550
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2008/V34/I05/546
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