TY - GEN

T1 - Numerical prediction of unsteady flows through turbine stator-rotor channels with condensation

AU - Sasao, Yasuhiro

AU - Yamamoto, Satoru

PY - 2005/12/19

Y1 - 2005/12/19

N2 - 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.

AB - 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.

KW - Condensation flow

KW - Numerical method

KW - Turbine stator-rotor interactions

KW - Turbulent flow

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M3 - Conference contribution

AN - SCOPUS:28844456467

SN - 0791841987

SN - 9780791841983

T3 - Proceedings of the American Society of Mechanical Engineers Fluids Engineering Division Summer Conference

SP - 855

EP - 861

BT - Proceedings of ASME Fluids Engineering Division Summer Conference, 2005 Symposia, FEDSM2005

T2 - 2005 ASME Fluids Engineering Division Summer Conference

Y2 - 19 June 2005 through 23 June 2005

ER -