The Investigation of Centrifugal Pumps Geometrical Parameters,Especially Absolute Roughness Height And The Number of Blades And Their Effects on Pump Performance by Analytical And Emperical Method

摘要

The effect of change of geometrical parameters of pump such as roughness of blades' surface,and the number of blades are important on pump efficiency.In this paper the effects of changing above parameters and tolerances of manufacturing of these parameters on efficiency is analyzed theoretically.It is specified that there is a good resemblance between the results of theoretical analysis and empirical data.The mentioned geometrical parameters and manufacturing tolerances of GOULDS centrifugal pump is determined by comparing the results of the theoretical analysis and empirical data.