Numerical simulation was performed to study the cooling configuration in the leading of blades at rotating state. The configuration was consisted of entering gas cavity, trailing edge and leading edge blocks. Computation was carried out for the different rotating velocity. The influence of rotating velocity on the fluid flow and heat transfer characteristics of this configuration was carried out. To impinging flow along the blade with outflow film under rotating state,the conclusion of numerical computation is given as follows:The heat transfer of the leading and trailing impingement surfaces are enhanced with the rotating velocity increasing. The heat transfer at the blade trailing impingement surface is stronger than at the leading impingement surface. The difference of heat transfer between the leading and trailing impingement surfaces decreases with the rotating velocity increasing.
Zhu Jinrong, Wu Hong, Tao Zhi, Ding Shuiting, Xu Guo.Fluid flow and heat transfer characteristics in the leading of blades at rotating state[J] JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(02): 261-264
Martin H. Heat and mass transfer between impinging gas jets and solid surface [J].Advances in Heat Transfer.1977, 13:1-60
Choi M, Seoung H, Yang G. Measurements of impinging jet flow and heat transfer on a semi-circular concave surface[J].International Journal of Heat and Mass Transfer.2000,43:1811-1822
Akella K V, Han J C. Jet impingement cooling in rotating two-pass rectangular channels with smooth walls . AIAA-97-2488,1997
Epstein A H, Kerrebrock J L, Koo J J. Rotational effects on impingement cooling[M]. Hemisphere Publ Corp, 1987. 86~102
�� ��,�� ��,���ǿ,��.����Ĥ��������תҶƬ�����ȴ��ʵ���о�[J].���ն���ѧ��,2000,15(4):375~380 Wu Hong,Tao Zhi,Xu Guoqiang,et al. Experiments of impinging cooling in leading edges of rotating blades with outflow film[J].Journal of Aerospace Power, 2000,15(4):375~380(in Chinese)
������. ��ֵ����ѧ[M]. ����:������ͨ��ѧ������,2001 Tao Wenquan. Numerical heat transfer [M]. Xi'an:Xi'an Jiaotong University Press, 2001(in Chinese)