REGARDING CERTAIN AERODYNAMIC SOURCES OF NON-STATIONARY FORCE LOADS ON TURBINE PROFILES

Tomáš Radnic, Martin Luxa, David Šimurda

Abstract


The paper deals with selected phenomena present in a blade cascade flow field. The presented research was performed on prismatic blade cascades composed mostly of the tip and root sections of the last stage rotor blade of a large output steam turbine. The unstarted supersonic flow on the cascade inlet, the separation of the flow and the swirl line behind the trailing edge have been identified as the possible sources of the unsteady force effects.

Keywords


turbine blade cascade, unstarted supersonic flow, swirl line, off design conditions

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ISSN 2336-5382 (Online)
Published by the Czech Technical University in Prague