VECTOR VELOCITY FLUCTUATIONS OF PROPAGATING STALL IN AXIAL FLOW COMPRESSORS

Abstract

The angular velocity of propagation of a single cell partial span propagating stall traveling on an isolated, or relatively isolated, axial compressor blade row was found experimentally to be equal to the downstream angular velocity of the flow outside the stall cell between successive passages of the stall cell averaged over the blade span. In a machine consisting of three stages, a similar stall was found to propagate at the mean of two such averages, i.e., upstreamAND DOWNSTREAM FROM ANY INTERIOR BLADE ROW. The sides of partial span stall cells were found to be streamtubes in several cases. Other general but less significant observations of propagating stall are reported. The hot wire anemometers used to measure unsteady vector velocities are described. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1961
Accession Number
AD0257404

Entities

People

  • Charles A. Bodeen

Organizations

  • California Institute of Technology

Tags

DTIC Thesaurus Topics

  • Anemometers
  • Atmospheric Motion
  • Axial Flow
  • Axial Flow Compressors
  • Biological Phenomena
  • Compressor Blades
  • Compressors
  • Ecological And Environmental Phenomena
  • Ecological And Environmental Processes
  • Flow
  • Hot Wire
  • Hot Wire Anemometers
  • Meteorological Phenomena
  • Motion
  • Observation
  • Physical Properties
  • Wind

Readers

  • Aerodynamics.
  • Combustion and Flow Dynamics.
  • Wave Propagation and Nonlinear Chaotic Dynamics.