12th European Conference on Turbomachinery Fluid dynamics & Thermodynamics

Paper ID:

ETC2017-190

Main Topic:

Steam Turbines

https://doi.org/10.29008/ETC2017-190

Authors

Vincenzo Dossena - Politecnico di Milano
Alberto Fusetti - Politecnico di Milano
Andrea Spinelli - Politecnico di Milano
Riccardo Ghio - Fincantieri S.p.A.
Claudia Raffaeli - Fincantieri S.p.A.
Alessandro Sabatini - Fincantieri S.p.A.
Fabio Cozzi - Politecnico di Milano
Carlo Osnaghi - Politecnico di Milano

Abstract

The paper describes the results of a numerical and experimental research program addressing the aerodynamic investigation on the performance of blade profiles specifically developed for application in highly loaded impulse type turbine stages. The industrial requirements driving toward the adoption of highly loaded stage solutions are presented, along with an estimation of the profiles operating parameters. Two stator vanes and one rotor blade profile have been developed and extensively tested by means of flow field measurements and schlieren visualization in a transonic blow-down wind tunnel for linear cascades. Experimental results for the relevant operating conditions are presented, providing validation data for the CFD model used for blade design and evidencing that the main goals of the design optimization procedure have been achieved.

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