Shape design of internal cooling passages within a turbine blade

Grzegorz Nowak (1) , Iwona Nowak (2)

1 Silesian University of Technology
2 Institute of Mathematics

The paper concerns the optimization of the shape and location of non-circular passages cooling the blade of a gas turbine. To model the shape, four Bezier curves which form a closed profile of the passage were used. In order to match the shape of the passage to the blade profile, a technique was put forward to copy and scale the profile fragments into the component. For so defined cooling passages optimization calculations were carried out with a view to finding their optimal shape and location in terms of the assumed objectives. The paper presents the impact of different parameters on the task convergence. Due to the problem of a different impact of individual objective on the solution front, a two-step optimization procedure was introduced. The optimization process resulted in a configuration of the cooling system that allows a significant reduction in the temperature of the blade and its thermal stress.

Mots clés: Physical Sciences

Domaines: Sciences de l'ingénieur [physics]

Grzegorz Nowak, Iwona Nowak. Shape design of internal cooling passages within a turbine blade. Engineering Optimization, 2011, pp.1. ⟨10.1080/0305215X.2011.580742⟩. ⟨hal-00712380⟩