Experiments of Impinging Cooling in Leading Edge of Rotating Blades with Outflow Film

The heat transfer characteristics of turbine blade model with outflow film under rotating state were researched experimentally.The experimental results indicated that the heat transfer was enhanced with increasing of Reynolds number obviously,but the increases in the blade leading and trailing edges were different.The effect of buoyancy force was complicated in the process of heat transfer.The effect of rotation is inconspicuous at small Reynolds number,but at high Reynolds number,the effect of rotation weakened the heat transfer.The interaction of the factors in the flow field affected the heat transfer,so the rule of the heat transfer was complicated.