Перспективные способы пленочного охлаждения: влияние ускорения основного потока

Abstract

The film deposition is widely used for the thermal protection of the blades of advanced high-temperature gas turbines. The acceleration of the main flow is one of the main factors that affect the efficiency of the film deposition of turbomachine blades. The data of experimental investigation of the influence produced by the main flow acceleration on the flat surface film deposition efficiency using the system of inclined slots that are arranged in the cavities of a different shape and also of the influence of the twin-slot system have been given. The acceleration of the main flow reduces the average efficiency of the film deposition for all options studied.