A Caltech Library Service

Effect of the Volute on Performance of a Centrifugal Pump Impeller

Bowerman, R. D. (1955) Effect of the Volute on Performance of a Centrifugal Pump Impeller. California Institute of Technology , Pasadena, CA. (Unpublished)

[img] PDF - Submitted Version
See Usage Policy.


Use this Persistent URL to link to this item:


An experimental study of volute influence on radial flow impeller performance was conducted by operating a single impeller with three different sets of volute vanes. In each case, over-all performance was measured and internal flow study within the volute was made. The results show that at their respective design flow rates the influence of the volutes is least and the deviation of performance from the free impeller operation is small. At off-design flow rates there are major changes in the impeller performance due to the presence of the volutes. Large real fluid effects, coupled with a quite nonuniform velocity pattern at the impeller exit, result in a flow through the volute that does not resemble a potential flow. Even so, the fluid losses through the volute are comparatively small. It is also shown that at off-design conditions, the flow cannot be irrotational and therefore potential flow theories cannot be used in describing the flow or predicting performance.

Item Type:Report or Paper (Technical Report)
Additional Information:Department of the Navy Office of Naval Research Fluid Mechanics Branch Contract N6onr-244, Task Order II (NR 062-010). Report No. E-19.7.
Group:Hydrodynamics Laboratory
Funding AgencyGrant Number
Office of Naval Research (ONR)N6onr-244, Task Order II (NR 062-010)
Record Number:CaltechAUTHORS:20150529-143343010
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57912
Deposited On:29 May 2015 22:40
Last Modified:03 Oct 2019 08:30

Repository Staff Only: item control page