Simulation of Optimum Loss Models for Radial Centrifugal Pump

Abstract

Conventional design methods of centrifugal pump are largely based on the application of empirical and semi-empirical rules along with the use of available information in the form of different types of charts and graphs in the existing literature. The program developed in this present work is the best suitable for low specific speed radial centrifugal pump. Same program is also suitable for the design of high specific speed and multistage centrifugal pump with few modifications. As the design of centrifugal pump involve a large number of interdependent variables, several other alternative designs are possible for same duty. Hence theoretical investigation supported by accurate experimental studies of the flow through the pump. In conventional method for calculating the pump efficiency is the function of specific speed, which is available in form of graph, empirical correlation in various text books and references .But in practical, efficiency has direct influence due to change of flow pattern, Renoldnumber, relative eddies in the impeller blade passage. Present work is aimed to calculate optimum set of loss models for low specific speed radial centrifugal pump .These optimum set of loss models are directly correlated with the geometrical and hydraulic parameters of centrifugal pump. These allow the study of the variation of performance with geometry. For the simulation computer program code has been developed which permits wide range of variables to be investigated.