The Influence of Blade Profile and Slots on the Performance of a Centrifugal Impeller (Influence du Profil de Pales et Fentes sur la Performance d'un Ventilateur Centrifuge),

Abstract

As part of the program of studies on centrifugal impellers, the problem of instability at low flows was investigated. The major cause was found to be flow detachment from the impeller vanes. Slotted blades were found to be the most effective means of delaying this detachment, and extending the working range of the blower. Low speed studies were confirmed by a test program on a high speed machine, where it was demonstrated that the improved flow range was accompanied by a general increase of efficiency. The design and placement of the slots is discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1980
Accession Number
ADA082728

Entities

People

  • H. S. Fowler

Organizations

  • National Research Council Canada

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Airfoils
  • Boundary Layer
  • Centrifugal Compressors
  • Compressors
  • Flow
  • Flow Visualization
  • Geometry
  • High Lift
  • High Lift Devices
  • Leading Edges
  • Measurement
  • Plastic Explosives
  • Pressure Gradients
  • Secondary Flow
  • Static Tests
  • Vortex Generators
  • Vortices

Readers

  • Aerodynamics.
  • Small Business Innovation Research Program (SBIR) EDI Research and Innovation.