Review of Advanced Effusive Cooling for Gas Turbine Blades

Turbine inlet temperature has continuously increased to improve gas turbine performance during the past few decades. Although internal convection cooling and traditional film have contributed significantly current achievement, advanced schemes are needed minimize coolant consumption maximize efficiency for future turbines. This paper conducts a comprehensive review of effusive blades. First, background history blade introduced. Then, metrics defined. Next, effusion cooling, impingement/effusion transpiration reviewed. The flow heat transfer mechanisms emphasized, design trends revealed. Finally, conclusions research perspectives summarized.