TY - JOUR
T1 - Investigation on heat transfer of a rotor blade tip with various film cooling holes arrangements and groove depths
AU - Tong, Fujuan
AU - Gou, Wenxuan
AU - Li, Lei
AU - Liu, Qingchang
AU - Yue, Zhufeng
AU - Xie, Gongnan
N1 - Publisher Copyright:
© 2015 SAGE Publications Ltd, unless otherwise noted. Manuscript content on this site is licensed under Creative Commons Licenses.
PY - 2015/2/19
Y1 - 2015/2/19
N2 - In this article, the effects of film cooling holes arrangement and groove depth on the heat transfer and film cooling performance of blade tip are investigated. For this numerical research, a high-pressure turbine blade with the squealer tip is applied, and the tip clearance is given to be 0.8€‰mm (1% of the blade span). Simultaneously, a typical tip cooling technology of film holes in the groove floor is used. The number of film holes is fixed at 10, and two kinds of holes arrangements are considered: (1) equidistance distribution and (2) dense distribution near the leading edge. Three groove depths are studied with the values of 1.5, 2.0, and 2.5€‰mm (1.875%, 2.5%, and 3.125% of the blade span, respectively). The results show that the area-averaged film cooling effectiveness is higher when the holes distribute densely near the leading edge, and the cooling effect of the groove depth with 2.0€‰mm is obviously high compared with the other two depths.
AB - In this article, the effects of film cooling holes arrangement and groove depth on the heat transfer and film cooling performance of blade tip are investigated. For this numerical research, a high-pressure turbine blade with the squealer tip is applied, and the tip clearance is given to be 0.8€‰mm (1% of the blade span). Simultaneously, a typical tip cooling technology of film holes in the groove floor is used. The number of film holes is fixed at 10, and two kinds of holes arrangements are considered: (1) equidistance distribution and (2) dense distribution near the leading edge. Three groove depths are studied with the values of 1.5, 2.0, and 2.5€‰mm (1.875%, 2.5%, and 3.125% of the blade span, respectively). The results show that the area-averaged film cooling effectiveness is higher when the holes distribute densely near the leading edge, and the cooling effect of the groove depth with 2.0€‰mm is obviously high compared with the other two depths.
KW - Blade tip cooling
KW - convection heat transfer
KW - film cooling holes arrangements
KW - groove depth
UR - https://www.scopus.com/pages/publications/84934271101
U2 - 10.1177/1687814014568499
DO - 10.1177/1687814014568499
M3 - 文章
AN - SCOPUS:84934271101
SN - 1687-8132
VL - 7
SP - 1
EP - 9
JO - Advances in Mechanical Engineering
JF - Advances in Mechanical Engineering
IS - 2
ER -