Accession Number:

AD0734591

Title:

Measured and Predicted Secondary Flows in a Centrifugal Impeller,

Descriptive Note:

Corporate Author:

WATERLOO UNIV (ONTARIO) DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1970-01-13

Pagination or Media Count:

7.0

Abstract:

The complete velocity distribution, including both primary and secondary velocities, has been measured in passages of centrifugal impellers of simple shape. Comparison is made with theoretically predicted secondary vorticities based on a simple combination of an inviscid primary flow and a streamwise vorticity generation analysis. The measured velocities were obtained in a water-flow impeller rig using a miniature, cylindrical, hot-film probe positioned on the rotating impeller and traversed and controlled remotely through slip rings. The understanding of the complex flow patterns was assisted by a photographic study employing a hydrogen bubble, flow visualization technique. Author

Subject Categories:

  • Non-electrical Energy Conversion
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE