Rotating Stall in a Radial Vaneless Diffuser

[+] Author and Article Information
W. Jansen

Northern Research and Engineering Corporation, Cambridge, Mass.

J. Basic Eng 86(4), 750-758 (Dec 01, 1964) (9 pages) doi:10.1115/1.3655945 History: Received January 28, 1964; Online November 03, 2011


This paper is concerned with the theoretical and experimental aspects of unsteady flow in a radial vaneless diffuser. Specifically, the appearance of self-excited oscillations of large amplitude is investigated in great detail. The waves appear when the angle between the tangential and total velocity becomes very small. The predicted wave speed and perturbed velocity distribution versus radius agree quite well with the experimentally obtained values, however, an undeterminable constant appears in the equation which describes the disturbed velocity distribution. A stability criterion indicates that such pulsating flow can occur if and only if there is a region of radially inward flow. The hypothesis is proposed that the waves are a result of the interaction of the three-dimensional boundary layer near the side walls and the free stream. Unsteady flows of this type can be linked to unstable centrifugal pump, blower, or compressor operation.

Copyright © 1964 by ASME
Your Session has timed out. Please sign back in to continue.






Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In