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�������պ����ѧѧ�� 2009, Vol. 35 Issue (10) :1188-1191    DOI:
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������1, ��ˮ͡1, �� ��2, �� ��2*
1. �������պ����ѧ ��ͨ��ѧ�빤��ѧԺ, ���� 100191;
2. �������պ����ѧ ���շ��������������ص�ʵ����, ���� 100191
Effects of channel orientation on fluid flow and heat transfer in a channel with angled ribs
Liu Chuankai1, Ding Shuiting1, Qiu Tian2, Tao Zhi2*
1. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ ��ֵģ���˾�ֹ����ת״̬�¾������60°б��ͨ�����������뻻�ȷֲ�,�о���3����ת��λ��:0°,-45°��+45°.�����˸���������Ƭ����תͨ�����������ȵ�������û���.����������:��ת��λ�Ƕ�ͨ���������뻻��Ӱ������.��0°��ת��λ����,ͨ��ǰ��Ե�Ļ��Ȳ������;��-45°��λ����,ͨ�����廻���������;��+45°��λ����,ͨ��������ѵ����廻������.
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Abstract�� Numerical simulations of turbulent flow and heat transfer in a rotating radial outward flow passage with 60° ribs were performed. Three channel orientations were studied, that is, 0°,-45° and +45°. Effects of Coriolis and rib induced secondary flows were analyzed with the three dimensional simulations and the following conclusions were drawn: the combined effects of Coriolis and rib induced secondary flows largely depend on channel orientation. The 0° channel orientation produces largest heat transfer variation between leading and trailing edges, the -45° channel orientation gives the lowest overall heat transfer augmentation, while the +45° channel orientation has the highest overall heat transfer enhancement.
Keywords�� gas turbines   cooling blades   convective heat transfer   numerical simulation   rotating     
Received 2008-10-08;
About author: ������(1979-),��,������������,��ʿ��,liuchuankai@buaa.edu.cn.
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������, ��ˮ͡, �� ��, �� ��.��ת��λ�Ƕ�б��ͨ���ڲ������뻻�ȵ�Ӱ��[J]  �������պ����ѧѧ��, 2009,V35(10): 1188-1191
Liu Chuankai, Ding Shuiting, Qiu Tian, Tao Zhi.Effects of channel orientation on fluid flow and heat transfer in a channel with angled ribs[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(10): 1188-1191
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