Abstract
An analytical method for the steady cavitation in turbomachinery is proposed under the assumption that stream surface is rotationally symmetric. The analysis on stream surface is performed by a singurality method based on closed cavity model and is combined with the analysis on meridian plane through the circumferentially averaged velocity. The present method is applied for a flat-helical inducer and the characteristics of alternate blade cavitation and three-dimensional effects on cavitation are discussed in comparison with the results of the analysis of two-dimensional flow.
