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�������պ����ѧѧ�� 2012, Vol. 38 Issue (5) :702-706    DOI:
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Structure design of a new cooling system combined micro channel and film cooling in the turbine blade
Sun Jining, Deng Jing, Deng Hongwu*
National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Numerical simulation was used to investigate a new compound cooling system, which combines micro channel and film cooling together in a guide turbine vane. Research was focused on the optimization design of these new organizational structures, in order to discuss the different effect on the characteristics of flow resistance and heat transfer. In these designed structures, branching channel structure in balancing cooling efficiency and the pressure loss has good effects. The computational results also show that the cooling efficiency of this compound cooling structure is higher than the cast-cooling blade. The prospect of the compound structure applied to turbine cooling system is huge.
Keywords�� micro channel   film cooling   cooling efficiency   pressure loss     
Received 2011-11-28;
�����, �˾�, �˺���.����ҶƬ΢Сͨ����Ĥ���͸�����ȴ�ṹ���[J]  �������պ����ѧѧ��, 2012,V38(5): 702-706
Sun Jining, Deng Jing, Deng Hongwu.Structure design of a new cooling system combined micro channel and film cooling in the turbine blade[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V38(5): 702-706
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2012/V38/I5/702
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