Accession Number:

AD0694294

Title:

UNSTEADY FLOW PHENOMENA IN ROTATING CENTRIFUGAL IMPELLER PASSAGES,

Descriptive Note:

Corporate Author:

WATERLOO UNIV (ONTARIO) DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

• Lennemann,E.
• Howard,J. H. G.

Report Date:

1968-12-20

Pagination or Media Count:

9.0

Abstract:

The phenomena of unsteady relative flow observed in a centrifugal impeller passage running at part capacity and zero flow are discussed. The mechanisms of passage stall for a shrouded and unshrouded impeller are investigated and a qualitative correlation is developed for the influence of secondary flow and inducer flow on the passage stall. The hydrogen bubble flow visualization technique is extended to higher velocities and rotating systems and provides the method for obtaining the experimental results. Author

Descriptors:

• (*CENTRIFUGAL COMPRESSORS
• *IMPELLERS)
• (*HIGH PRESSURE COMPRESSORS
• THREE DIMENSIONAL FLOW)
• SHROUDED PROPELLERS
• SECONDARY FLOW
• FLOW VISUALIZATION
• BUBBLES
• HYDROGEN
• ROTARY COMPRESSORS
• VELOCITY
• PATTERN RECOGNITION
• TEST METHODS
• PHOTOGRAPHY
• ONTARIO

Subject Categories:

• Hydraulic and Pneumatic Equipment
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE