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�������պ����ѧѧ�� 2009, Vol. 35 Issue (4) :398-402    DOI:
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�������պ����ѧ ���շ��������������ص�ʵ����,���� 100191
Numerical simulation of film cooling effectiveness on rotating curvature models
Yang Bin, Xu Guoqiang, Meng Henghui, Wu Hong*
National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191,China

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ժҪ ͨ������ת״̬������ҶƬģ������Ĥ��ȴ����������ͻ��Ƚ�����ֵģ��,�õ��˲�ͬ������ŵ��������Ⱥ���ת��������������ѹ�����ϵ���ȴЧ�ʷֲ�.����ѡ�ê�κ-ω����SST(Shear-Stress Transport)����ģ��,������ŵ����Re��=3 198.4~6 716.6,����Ȫ�M��=0.2~1.2,��ת����Rt��=0~0.015 9.�������:��ת������������Ĥ�����������������ȴЧ���½�,��ʹѹ������������ȴЧ���������;����ȵ�����ʹ���������ѹ�����ϵ���ȴЧ���𽥽���,������ŵ���ı仯�Ա���������ȴЧ����Ӱ�첻��.����,��ͬ�������������ϵ���ȴЧ��Ҫ����ѹ�����ϵĶ�Ӧֵ.
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Abstract�� Computations were performed to investigate the adiabatic effectiveness ��η�� distributions on the curvature turbine blade models under rotating conditions. In the present study, the Reynolds number ��Re�� based on mainstream velocity and film hole diameter varies from 3�Q198.4 to 6�Q716.6, the blowing ratio ��M�� ranges of ��0.2�� to 1.2, and the rotation number ��Rt�� alters from 0 to 0.015�Q9. Both ��κ-ω�� and the shear-stress transport(SST) models were chosen for turbulence closure. Results show that the increase of ��Rt�� leads to decreased ��η�� values in the centerline region downstream the film hole, but can improve the integrated effectiveness properly on the pressure surface. The augmentation of ��M�� also results in the decreased adiabatic effectiveness, while the variation of ��Re�� has little influence on the comprehensive cooling effect. In addition, the values of ��η�� on the suction surface are much greater than that on the pressure surface under the same operating conditions.
Keywords�� film cooling   rotation   adiabatic effectiveness   curvature     
Received 2008-07-20;
Fund:

�����������˲�֧�ּƻ�������Ŀ(NCET-05-0189);��ʿ�����������Ŀ(200604114);���ջ���������Ŀ(04C51028)

About author: �� ��(1982-),��,������,��ʿ��,yb1982@sjp.buaa.edu.cn.
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�� ��, ���ǿ, �Ϻ��, �� ��.���ʶ���ת̬��Ĥ��ȴЧ��Ӱ�����ֵģ��[J]  �������պ����ѧѧ��, 2009,V35(4): 398-402
Yang Bin, Xu Guoqiang, Meng Henghui, Wu Hong.Numerical simulation of film cooling effectiveness on rotating curvature models[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(4): 398-402
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