Abstract

The objectives of this research is to predict the values of the (head, efficiency, pressure and velocity)of the three dimensional flow inside impeller and volute by using computational fluid dynamics technique CFD commercial code (CFX-TASCflow V. 2.12). The governing equations are continuity and three dimensional Navier-Stokes equations. These equations are discretized by finite volume method and solved by SIMPLE logarithm.The observed data for pump are collected from Al-Karama Company. The predicted results of the performance characteristics curves are validated with the observed results. The validations are properly predicted at design and below the design flow rate, but above the design flow rate; the prediction starts to deviate and over at off-design conditions. The recirculation zone appears at the diffuser near the tongue at off-design conditions. The mean square error (MSE) is used to evaluate the deviation between predicted and observed results. The maximum deviation between predicted and observed results is equal to 5%. The results demonstrate the capability of the software package to calculate the performance characteristics for centrifugal pump with a volute

The article was added to IASJ on 2012-05-21

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