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�������պ����ѧѧ�� 2007, Vol. 33 Issue (03) :290-293    DOI:
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�������պ����ѧ ���շ��������������ص�ʵ����, ���� 100083
Flow and heat transfer in rotor-stator system with pre-swirl angle of 30°
Luo Xiang, Xu Guoqiang, Tao Zhi, Ding Shuiting*
National Key Laboratory on Aero-Engines, Beijing University of Aeronau tics and Astronautics, Beijing 100083, China

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Abstract�� An experimental study of the flow and heat transfer characteristics in a pre-sw irl rotor-stator system was described. Pre-swirl cooling air thr ough nozzles with angle of 30° in the stator flows radially outwards and leav es system from the clearance between rotor and stator. The distributions of the pressure on the stator surface, temperature, local and averaged Nusselt number o n the rotating disk surface were obtained from the tests. The experiments reveal that the pressure on the stator surface increase as the radius and also increas e as rotating speed. The local ��Nu�� number will keep invariable when ��r��0.7R(R�� is effective radius of rotating disk) in the rotating disk surface, but it will inc rease rapidly as radius when ��r��0.7R��. The cooling flow rate have more effects on average ��Nu�� number than rotating speed in this pre-swirl angle.
Keywords�� gas turbines   rotors   stators   pressure distribution   heat transfer coefficients     
Received 2006-04-26;
About author: �� �� (1973-),��,�Ĵ��ɶ���,��ʿ��, xiang.luo@buaa.edu.cn.
����, ���ǿ, ����, ��ˮ͡.30°Ԥ��������ת�������뻻�����Ե�ʵ��[J]  �������պ����ѧѧ��, 2007,V33(03): 290-293
Luo Xiang, Xu Guoqiang, Tao Zhi, Ding Shuiting.Flow and heat transfer in rotor-stator system with pre-swirl angle of 30°[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(03): 290-293
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