A Numerical Study on Centrifugal Pump Performance with the Influence of Non-Newtonian Fluids

Muhammed Donmez,Onur Yemenici

doi:10.18483/ijsci.2010

Abstract

In the present study, effects of non-Newtonian fluids on the characteristics of a centrifugal pump which was designed at 3300 rpm and 40 l/min for water were examined numerically. A numerical analysis using Computational Fluid Dynamics methodology was carried out. Water and three different non-Newtonian fluids of CMC 0.4%, CMC 0.3% and CMC 0.2% which derived from Carboxy Methyl Cellulose (CMC) solution were used in the analyses. The analyses were performed with the flow rates range of 10-80 l/min and rotor speed values of 3300 rpm and 1400 rpm. The results showed that the performance of the pump with non-Newtonian fluids was better than the water at 3300 rpm, contrary to 1400 rpm.

Highlights

The non-Newtonian fluids are widely used in centrifugal pumps for many engineering applications especially food, medicine, production industry
The pressure increased from leading edge to trailing edge of the impeller due to the dynamic head developed by the rotating pump impeller, while decreased towards the outlet of the volute
A numerical analysis was performed on centrifugal pump with water increased with blade the performance characteristics of the centrifugal number and outlet blade angle optimization

Summary

Introduction

The non-Newtonian fluids are widely used in centrifugal pumps for many engineering applications especially food, medicine, production industry. There have been several previous investigations on the centrifugal pump performance with the influence of non-Newtonian fluid such as; Zhang et al [1] studied experimental research on the effects of non-Newtonian fluid on centrifugal blood pump performance. They found that the pump head rise with the solution was lower than that with water at the same flow rate for low rotor speeds, while it was higher for high rotor speeds, and a maximum difference of %7 was detected.

Methods

Results

Conclusion