抄録
A practical numerical prediction of unsteady 3-D flows with nonequilibrium condensation is conducted for low-pressure final three-stage stator-rotor blade rows in an actual steam turbine developed by Mitsubishi Heavy Industry. Compressible Nervier-Stokes equations are solved by the MUSCL TVD scheme, Roe's approximate Riemann solver, and the LU-SGS scheme. The SST-model is used for evaluating the eddy-viscosity. The mass generation rate for water droplets is modeled as a sum of the mass generation rate of critical-sized nucleus and the growth rate of water droplets based on the classical condensation theory. In this paper, effect of unsteady flows on the nonequilibrium condensation in the long blade rows is briefly discussed from the obtained results.
