Abstract

The internal flow in turbo machines is extremely complex due to the level of details of the blades, with different angles and different levels of curvature and thickness, as well as the characteristics of the channel between blades that is a direct reflection of the geometry employed, added to the phenomena caused by high speed rotation. In the literature we can find several studies that aim to improve the performance of aeronautical turbines, an arduous but necessary task, to enable the maximization of efficiency and power, thus leading to even more complex projects. Among the various possible strategies, an engineering branch specializes in computational techniques due to the agility and versatility they provide. Through a virtual prototype, it becomes possible to observe the phenomena involved and changes in contour and geometry conditions to compare the results. This study seeks the optimization of an axial turbine from a small gas turbine engine developed by ITA using Computational Fluid Dynamics (CFD) and Multi-Objective Optimization techniques focused on geometry changes to maximize the turbine performance. The simulation process will be done through the use of the commercial software ANSYS®.

Keywords

turbo-machinery, optimization, CFD, ANSYS, multi-objective, mode frontier