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A Model for Liquid Films in Steam Turbines and Preliminary Validations

[+] Author Affiliations
Amélie Simon, Meryem Marcelet, Jean-Marc Hérard, Jean-Marc Dorey

EDF R&D, Chatou, France

Michel Lance

LMFA, Ecully, France

Paper No. GT2016-56148, pp. V008T26A007; 10 pages
  • ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition
  • Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines
  • Seoul, South Korea, June 13–17, 2016
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4986-6
  • Copyright © 2016 by ASME


Liquid films in steam turbines, present in usual operating conditions, play a large but poorly understood part in the wetness-born troubles (power losses and erosion). More knowledge is needed to estimate their impacts and lessen their effects. The aim of this paper is to propose and verify a model to predict these liquid films. This model is based on modified Shallow-Water equations (integral formulation). It takes into account inertia, mass transfer, gravity, gas and wall frictions, pressure, surface tension, droplet impacts, rotational effects and is unsteady. A 2D code has been developed to implement this model. A part of the model has been verified with analytical solutions (Riemann problems and inclined lake at rest), has been confronted with the linear stability of falling liquid film and has been validated with the experiment of Hammitt et al. [1] which involves a sheared film under low-pressure steam turbine conditions.

Copyright © 2016 by ASME



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