Experimental and FEM Vibration Analysis of Impellers used for Water Pump

Haider Jasim

Authors

Haider Jasim Chemical Engineering Department, College of Engineering, Basrah University, Iraq https://orcid.org/0000-0002-5560-1060

Keywords:

vibration, NPSH, impeller, porosity, cavitation

Abstract

The impeller is an essential component of the water pump. Vibrations of the impeller have a significant effect on the pump's performance, as well as posing some damaging effects. In this study, the vibration of three different types of impellers for water pumps (brass, bronze, and plastic) was evaluated experimentally and compared with computational finite element method (FEM). A number of variables includes temperature, flow rate, impeller material composition, and the chemical composition of water been studied. The findings indicated that vibration issues increased as flow rate increased. The plastic impeller has the highest vibration rate compared to brass and bronze impellers under the identical testing conditions. The vibration rate of impellers tested in seawater is higher than that them tested in tap water. Increasing the temperature of the water accelerates the vibration process. Cavitation occurs in seawater at a lesser Net Positive Suction Head (NPSH) than in tap water.

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