Post Stall Behavior in Axial-Flow Compressors.

Abstract

A multi-element research program was conducted to improve understanding of the role of cascade losses in compressor post-stall behavior. Experiments in a special wind tunnel designed for high-angle-of-attack investigations included surface and smoke flow visualizations and hot film anemometer velocity measurements. Results showed the details of the stall development in a cascade, and the effect of stagger on measured flow losses. Predictions of a Navier-Stokes model for separated cascade flows were compared with experimental results. An improved compressor stage model predicts post-stall characteristics, and illustrates the application of the results to compression system analysis. Keywords: Cascades (Fluid dynamics); Flow measurements; Stalling behavior; Propagating stalls.

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Document Details

Document Type
Technical Report
Publication Date
Aug 20, 1987
Accession Number
ADA185712

Entities

People

  • Walter F. O'brien

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Cameras
  • Compressors
  • Computational Fluid Dynamics
  • Flow
  • Flow Fields
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Mechanics
  • High Angles
  • Hydrodynamics
  • Measurement
  • Photographs
  • Pressure Measurement
  • Stratified Fluids
  • Test Facilities
  • Turbines

Readers

  • Aerodynamics.
  • Computational Fluid Dynamics (CFD)