3102 多段タービン翼列を通る湿りを伴う干渉流れの数値シミュレーション(OS-31A,OS-31 CFDの工学的応用)

概要

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Wet-steam flows through steam-turbine cascades in a multiple stage are numerically simulated. 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 turbine cascades in multi stage developed by Mitsubishi Heavy Industries are calculated assuming unsteady states. Finally, the effect of the wetness in the stages are numerically predicted. 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 homogeneous and heterogeneous condensations. These equations are solved by the fourth-order compact MUSCL TVD scheme and LU-SGS scheme.
社団法人日本機械学会の論文
2005-11-17