Droplet impact modelling in steam turbine blades

Conference · Sun Dec 31 00:00:00 EST 1995

OSTI ID:207804

Szwedowicz, D ^[1]

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1. National Centre for Research and Technological Development, Cuernavaca (Mexico). Mechanical Dept.

The finite element formulation for the droplet impact in rotating large steam turbine blades is presented. Considering tapered airfoil geometries and damping effects, the estimation of time step stability limits of direct numerical integration is analyzed. The applied beam preliminary analyses and the final three dimensional finite element computation provide efficient solutions for impact problems of rotating turbine blades. For the considered large steam turbine blade, erosive droplets do not induce dangerous dynamic stresses for the blade endurance. Only water brooklets can cause structural damages of rotating blades. The presented algorithm can be extended to solid particle impact problems.

• OSTI ID: 207804
• Report Number(s): CONF-951010-; ISBN 0-7918-1488-2; TRN: IM9616%%132
• Resource Relation: Conference: International joint power generation conference and exposition, Minneapolis, MN (United States), 8-12 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Proceedings of the 1995 international joint power generation conference -- Volume 3: Power. PWR-Volume 28; Fruchtman, I.; Hartman, S.; Moore, B.; Henry, R.; Karg, D.; Curley, M.; Reid, S.; Sykes, B. [eds.]; PB: 545 p.
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
STEAM TURBINES
MATHEMATICAL MODELS
TWO-PHASE FLOW
TURBINE BLADES
DAMAGE