ANALYTICAL PROCEDURES FOR RAPID SELECTION OF COOLANT PASSAGE CONFIGURATIONS FOR AIR-COOLED TURBINE ROTOR BLADES AND FOR EVALUATION OF HEAT-TRANSFER,nSTRENGTH, AND PRESSURE-LOSS CHARACTERISTICS

摘要

A method based on geometric factors of the coolant passage was evolved for the rapid selection and evaluation of coolant passage configurations for air-cooled turbine rotor blades. The more promising coolant passage configurations, as selected by the simple blade evalua-tion criteria, are then analyzed by detailed methods to obtain absolute values of the required cooling-air weight flow, the pressure loss，and the strength characteristics.