Table of Contents
ISRN Mechanical Engineering
Volume 2013, Article ID 578072, 15 pages
Research Article

Numerical Investigation of a First Stage of a Multistage Centrifugal Pump: Impeller, Diffuser with Return Vanes, and Casing

University of Quebec in Abitibi-Témiscamingue, School of Engineering's Department, 445 Boulevard de l'Université, Rouyn-Noranda, QC, Canada J9X 5E4

Received 4 April 2013; Accepted 4 May 2013

Academic Editors: A. A. Kendoush, A. Z. Sahin, and Z. Yu

Copyright © 2013 Nicolas La Roche-Carrier et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper deals with the numerical investigation of a liquid flow in a first stage of a multistage centrifugal pump consisting of an impeller, diffuser with return vanes, and casing. The continuity and Navier-Stokes equations with the turbulence model and standard wall functions were used. To improve the design of the pump's first stage, the impacts of the impeller blade height and diffuser vane height, number of impeller blades, diffuser vanes and diffuser return vanes, and wall roughness height on the performances of the first stage of a multistage centrifugal pump were analyzed. The results achieved reveal that the selected parameters affect the pump head, brake horsepower, and efficiency in a strong yet different manner. To validate the model developed, the results of the numerical simulations were compared with the experimental results from the pump manufacturer.