A Study of the Effect of Nozzle Spacing and Driving Pressure on the Water Jet Pump Performance (original) (raw)

2013

Abstract

An extensive program has been made to study the effect of many geometric variables under different operating conditions on the performance of the jet pump at the National Water Research. This paper presents results of Computational Fluid Dynamic (CFD) analysis and experimental investigation of a water jet pump. The effect of driving pressure as well as the nozzle spacing has been investigated experimentally and numerically. Computational fluid dynamics (CFD) modeling studies were undertaken to understand the hydrodynamic characteristics with reference to the jet pump geometry. The CFD model also provides a basis for quantifying the effects of operating conditions on the pump performance. In this paper, the performance measurements are carried out for four driving pressures 1, 1.5,2, and 2.5 bar, also four values of nozzle spacing to throat diameter ratio are used, they are X= 0, 0.5, 0.75 and 1. The results show that the important findings of velocity profile and pressure distributi...

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