Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published 1994 | Published
Book Section - Chapter Open

Laser Velocimeter Measurements in the Leakage Annulus of a Whirling Shrouded Centrifugal Pump


Previous experiments conducted in the Rotor Force Test Facility at the California Institute of Technology have thoroughly examined the effect of leakage flows on the rotordynamic forces on a centrifugal pump impeller undergoing a prescribed circular whirl. These leakage flows have been shown to contribute substantially to the total fluid induced forces acting on a pump. However, to date nothing is known of the flow field in the leakage annulus of shrouded centrifugal pumps. No attempt has been made to qualitatively or quantitatively examine the velocity field in the leakage annulus. Hence the test objective of this experiment is to acquire fluid velocity data for a geometry representative of the leakage annulus of a shrouded centrifugal pump while the rotor is whirling using laser velocimetry. Tests are performed over a range of whirl ratios and a flowrate typical of Space Shuttle Turbopump designs. In addition to a qualitive study of the flow field, the velocity data can be used to anchor flow models.

Additional Information

The assistance provided by Caltech graduate student Qiao Lin with the experimental program is appreciated. We would also like to thank Mike Yandell of Rocketdyne for the test section design.

Attached Files

Published - SIV145.pdf


Files (630.8 kB)
Name Size Download all
630.8 kB Preview Download

Additional details

August 21, 2023
August 21, 2023