Abstract
The flow through centrifugal compressors and pumps is a three-dimensional flow problem and is of such a complex nature that an exact solution is not obtainable. The literature (1, 2) shows the differential equations which the flow through an impeller must follow. An approximate solution to these equations is found by means of certain assumptions which are possible for impellers within a limited range of specific speeds. The solution gives the approximate velocity and pressure distribution in the impeller passages. The knowledge of the velocity distribution is used to analyze the phenomena of pulsation and blade stalling. The method has also been used in mixed-flow compressors and radial- and mixed-flow turbines. The application of this method for two impellers and test data are presented.
