In order to explore the effects of rotation on impinging jets flow and heat transfer characteristics of the blade leading edge

the flow structure and heat transfer distribution were studied by numerical method. Furthermore

the differences between the stationary condition and three rotation speeds were compared and analyzed. Results showed that the target average Nusselt number decreased with the increase of the rotation speed. At the highest rotation speed

the target average Nusselt number was reduced by 16%. On the other hand

the sensitivity of pressure side and suction side to rotation was different. At high rotation speed

the decrement of heat transfer was mainly concentrated on the entire suction side and the area where the dimensionless curve length s/d was less than 2 on the pressure side

while the heat transfer in the area where s/d was greater than 2 on the pressure side was slightly enhanced. Rotation had a significant effect on the flow structure. The mass flow distribution of the jet holes was changed by rotation

and Coriolis forces deflected jets to the pressure side. This feature became more pronounced with the increase of rotating speed. In addition

the centrifugal force in the rotating channel changed the local intensity of crossflow.