Numerical prediction of unsteady flows through turbine stator-rotor channels with condensation

Yasuhiro Sasao, Satoru Yamamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

Unsteady transonic flows with condensation through steam turbine stator-rotor channels are numerically predicted by using the numerical method developed by our group. Fundamental equations solved here consist of conservation laws of mixed gas, water vapor, water liquid, and the number density of water droplets, coupled with the momentum equations and the energy equation. Also the shear-stress transport (SST) turbulence model is employed to predict the turbulent quantities. The numerical method is based on the high-order high-resolution finite-difference method. The fourth-order monotone upstream-centered schemes for conservation laws (MUSCL) with the total variation diminishing (TVD) scheme, Roe's approximate Riemann solver, and the lower-upper symmetric Gauss-Seidel (LU-SGS) scheme are employed in the numerical method. As numerical examples, transonic condensate flows of moist air through a turbine and a compressor cascade channel are first calculated. Also wet-steam turbine stator-rotor cascade channels are calculated assuming homogeneous and heterogeneous condensations.

Original languageEnglish
Title of host publicationProceedings of 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005
Pages659-665
Number of pages7
DOIs
Publication statusPublished - 2005 Dec 1
Event2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005 - Houston, TX, United States
Duration: 2005 Jun 192005 Jun 23

Publication series

NameProceedings of 2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005
Volume2005

Other

Other2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005
CountryUnited States
CityHouston, TX
Period05/6/1905/6/23

Keywords

  • Condensation flow
  • Numerical method
  • Turbine stator-rotor interactions
  • Turbulent flow

ASJC Scopus subject areas

  • Engineering(all)

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