Study on the Impact of Cooling Air Parameter Changes on the Thermal Fatigue Life of Film Cooling Turbine Blades

• Published in: Aerospace Vol. 12; no. 6; p. 512
• Main Authors: Sun, Huayang, Yang, Xinlong, Chen, Yingtao, Ai, Yanting, Zhang, Wanlin
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.06.2025
• Subjects: Air flow; Analysis; Blade tips; Cold; Configurations; Cooling; Cracks; Damage; Effectiveness; Efficiency; Fatigue; Fatigue failure; Fatigue life; Fatigue testing machines; Fatigue tests; Film cooling; fluid-solid thermal coupling simulation; gas film cooling; Gas turbine engines; Gases; Heat; Materials; Parameter identification; Perforation; Ratios; Shock tests; Stress concentration; Stress distribution; Structural integrity; Surface temperature; Temperature; the thermal stress: fatigue life; Thermal fatigue; Thermal shock; thermal shock test; Turbine blades; Turbines; China

Film cooling has been increasingly applied in turbine blade cooling design due to its excellent cooling performance. Although film-cooled blades demonstrate superior cooling effectiveness, the perforation design on blade surfaces compromises structural integrity, making fatigue failure prone to occu...