Aerodynamic-thermomechanic coupling and creep-fatigue damage prediction. Part A: Aerodynamic investigation
Conference
·
OSTI ID:207801
- Electricite de France, Chatou (France)
The purpose of this paper is an aerodynamic simulation of the bucket root and diaphragm packing leakage flow within an impulse steam turbine HP cylinder. Calculations were undertaken in order to accurately compute both the steam temperature and the steam-metal heat transfer coefficients. In order to perform this study, a compressible and turbulent finite elements Navier-Stokes code was used. Inlet and exit conditions were computed using an axisymmetrical through flow computer code and a thermal boundary layer modelling, based on classical wall function laws, was used in order to compute heat transfer coefficients. This computational study has underlined the capability of their computer codes to deal with a complex industrial problem and thermal wall boundary conditions were accurately obtained. Moreover, a complex leakage flow problem, with many recirculation zones was solved and interesting results are available.
- OSTI ID:
- 207801
- Report Number(s):
- CONF-951010--; ISBN 0-7918-1488-2
- Country of Publication:
- United States
- Language:
- English
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