Multi-objective optimization workflow uncooled three-stage axial low pressure turbine

The article describes the results of multi-criteria optimization of a three-stage axial uncooled low-pressure turbine. The purpose of optimization was to improve the turbine operating process according to three criteria: the angle of flow at the turbine output, the value of the residual twist of the flow at the turbine output, the value of the turbine efficiency. To solve the problem, complete re-profiling of all turbine blades was performed. Re-profiling included changing both the shape of the blade sections and the relative position of the sections relative to each other in the radial direction (3D profiling).