During the course of expansion in turbines, the steam at first supercools and then uncleated to become a two-phase mixture. This is an area where greater understanding can lead to improved disign.describes a numerical method for the solution of two-dimensional two-phase flow of steam in a cascade of turbine blading; the unsteady Euler equations governing the overall behavior of the fluid are combined with equations describing droplet behavior and treated by Jameson’s fourth order Runge Kutta time marching scheme which to allow for two-phase effects. The theoretical surface pressure distributions, droplet radii and contours of constant wetness fraction are presented and results are discussed in the light of knowledge of actual surface pressure distributions

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