Research progress of mixing loss model for film cooling on turbine blade

•Early and current film cooling loss models are reviewed.•Trend of future film cooling loss models are predicted.•Combination of loss analysis and algorithm optimization is evaluated. The development of turbine loss models, especially the loss models under the influence of film cooling were reviewed. From early loss models with only aerodynamic analysis to film cooling loss models, a series of experimental and numerical simulation validation, application of film cooling loss models at present were summarized and limitations of the current film cooling loss models were exposed. Development of film cooling loss models was found to have a delay in experimental application, though the mixing process had three-dimensional assumption. The feasibility of loss models needed to be improved. Some recent models with targeted optimization algorithms were gathered and analyzed. It can be predicted that the newly proposed film cooling loss model will be more closely related to optimization algorithms with more realistic assumptions and more detailed analyses. and will have more practical application value such as being able to be validated in experiments under extreme conditions.