Fluid flow and heat transfer characteristics in the leading edge of blades at rotating state

Numerical simulation was performed to study the cooling configuration in the leading edge of blades at rotating state. The configuration 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 described. To impinging flow along the blade with outflow film at rotating state, the conclusion of numerical computation is as follows: the heat transfer of the leading edge and trailing edge impingement surfaces are enhanced with the rotating velocity increasing. The heat transfer at the trailing edge impingement surface is stronger than that at the leading edge impingement surface. The difference of heat transfer between the leading edge and trailing edge impingement surfaces decreases with the increase of rotating velocity.