TY - JOUR
T1 - Numerical simulation of wet-steam flows through turbine cascades in multiple stage
AU - Sasao, Yasuhiro
AU - Yamamoto, Satoru
AU - Ishizaka, Koichi
AU - Ohyama, Hiroharu
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2007/4
Y1 - 2007/4
N2 - Wet-steam flows through steam-turbine cascades in a multiple stage are numerically simulated. Fundamental equations contain conservation laws of water vapor, water liquid, the number density of nucleus, momentum equations, and the energy equation. The SST turbulence model is employed to predict the eddy viscosity. The classical condensation theory is used for modeling homegeneous and heterogeneous condensatins. These equations are solved by the fourth-order compact MUSCL TVD scheme and LU-SGS scheme. As numerical examples, wet-steam flows through a single cascade channel developed by Bakhtar is calculated and the calculated results are compared with the experiments, and wet-steam flows through turbin cascades in a multi stage developed by Mitsubishi Heavy Industries are calculated assuming steady and unsteady states, Finally, the effect of the wetness in the stages are numerically predicted.
AB - Wet-steam flows through steam-turbine cascades in a multiple stage are numerically simulated. Fundamental equations contain conservation laws of water vapor, water liquid, the number density of nucleus, momentum equations, and the energy equation. The SST turbulence model is employed to predict the eddy viscosity. The classical condensation theory is used for modeling homegeneous and heterogeneous condensatins. These equations are solved by the fourth-order compact MUSCL TVD scheme and LU-SGS scheme. As numerical examples, wet-steam flows through a single cascade channel developed by Bakhtar is calculated and the calculated results are compared with the experiments, and wet-steam flows through turbin cascades in a multi stage developed by Mitsubishi Heavy Industries are calculated assuming steady and unsteady states, Finally, the effect of the wetness in the stages are numerically predicted.
KW - CFD
KW - Condensation
KW - Multiple stages
KW - Steam turbine
KW - Wet-steam flows
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U2 - 10.1299/kikaib.73.936
DO - 10.1299/kikaib.73.936
M3 - Article
AN - SCOPUS:34547492787
VL - 73
SP - 936
EP - 941
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 4
ER -