Three-dimensional optimization of turbine blades considering film cooling

In order to study the characteristics of air-cooled turbine blade design, a platform which can be used to optimize blades with film cooling has been established, and full three-dimensional multi-objective optimization for a blade with film cooling can be implemented using this platform. In this system 11-parameter method was used for modeling of the blade. A series of studies on selection of optimization variables and optimization strategy and the setting of the optimization goal based on the modeling method and optimization requirements were carried out. Multi-Island Genetic Algorithm (MIGA) was used for overall optimization. An aviation turbine stator was optimized using this platform. As different targets are weighted with the different focus of the object function, the optimization program shows different characteristics and the results show that the aerodynamic efficiency has increased and the cooling effects is also improved.