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.

Experimental and numerical analysis of supersonic blade profiles developed for highly loaded impulse type steam turbine stages

Dossena, V.;FUSETTI, ALBERTO;Spinelli, A.;Osnaghi, C.;Cozzi, F.
2017

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.
12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, ETC 2017
Shock visualization; Supersonic impulse stage; Supersonic turbine; Turbine cascades; Mechanics of Materials; Mechanical Engineering; Condensed Matter Physics
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/1049864
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