Accelerated Combustion through Streamwise Vorticity Stirring

Abstract

Experiments were conducted to observe the effect of streamwise vorticity on the rate of propagation of confined, high-speed, non-premixed turbulent flames. Water-flow visualization experiments were first conducted to establish the scale and intensity of the vortex arrays generated by convoluting the trailing edge of the splitter separating two parallel streams; one stream representing the oxidizer and the other stream representing the fuel. Combustion experiments then conducted; these experiments determined that the splitter plate design which generated the most intense vortex array in cold flow caused the flame spreading rate to be roughly twice that produced by a conventional flat splitter. Flame spreading rates were determined by photographing the direct flame emission radiated by atmospheric pressure flames. Keywords: Flame propagation, Vorticity, High-speed flow, Turbulent combustion, Streamwise vorticity, Combustion.

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Document Details

Document Type
Technical Report
Publication Date
Aug 31, 1988
Accession Number
ADA198917

Entities

People

  • John B. Mcvey

Organizations

  • United Technologies Corporation

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Burning Rate
  • Cameras
  • Combustion
  • Combustion Products
  • Combustors
  • Computational Fluid Dynamics
  • Control Systems
  • Creep
  • Flow Visualization
  • Fluid Dynamics
  • Geometry
  • Ignition
  • Ignition Lag
  • Photographs
  • Photography
  • Pressure Transducers

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Fluid Mechanics and Fluid Dynamics.