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�������պ����ѧѧ�� 2004, Vol. 30 Issue (06) :551-556    DOI:
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�º���1, ̷����2, ��˳2, ������2*
1. �������պ����ѧ �ѧԺ, ���� 100083;
2. �й���ѧԺ?�����������о���, ���� 100080
Experimental investigation on effects of blade negative bowing in turbine stator cascades
Chen Haisheng1, Tan Chunqing2, Kang Shun2, Liang Xizhi2*
1. School of Astronautics, Beijing University of Aeronautics and Astronautics�� Beijing 100083, China;
2. Institute of Engineering Thermophysics, Chinese Academy of Scien ces�� Beijing 100080, China

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Abstract�� The outlet flowfield and static pressure on blade surfaces of the classical turbine stator cascades with straight and -10°��-20° bowed blades were measured in the linear cascade wind tunnel. Effects of blade negative bowing on secondary flow, total pressure loss and outlet flow angle were analyzed quantitatively, mechanism of the effects was discussed as well. The results show that the negative bowing results in the "C" shape distribution of static pressure on blade surfaces, which is the main reason for the variation of characteristics of flowfield, however the aerodynamic performances of cascades can not be improved by negatively bowed blades.
Keywords�� turbine   cascades   experiment   blades   bowing     
Received 2003-01-20;
About author: �º���(1977-),��,ɽ��������,��ʿ��, chen hs@buaa.edu.cn.
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�º���, ̷����, ��˳, ������.͸ƽ��Ҷ��ҶƬ���������õ�ʵ���о�[J]  �������պ����ѧѧ��, 2004,V30(06): 551-556
Chen Haisheng, Tan Chunqing, Kang Shun, Liang Xizhi.Experimental investigation on effects of blade negative bowing in turbine stator cascades[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(06): 551-556
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2004/V30/I06/551
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