Spray Nonuniformities in Gas-Centered Swirl-Coaxial Injectors (Preprint)

Abstract

Experimental studies of gas-centered swirl-coaxial (GCSC) injectors have revealed five basic types of nonuniformities in the spray. These nonuniformities can be classified as either affecting the centerline of the spray, with respect to the centerline of the injector, or affecting the temporal mass-distribution. The details of these behaviors are discussed as are possible driving factors and design criteria for avoidance. In general, high momentum flux operations are suggested for minimizing centerline deviations and careful selection of the thickness of the lip initially separating the gas and liquid phases is suggested for minimizing mass-distribution issues.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2009
Accession Number
ADA503091

Entities

People

  • Malissa D. Lightfoot
  • Stephen A. Danczyk

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force Research Laboratories
  • Design Criteria
  • Flow
  • Flow Rate
  • Fluid Mechanics
  • Fluids
  • Frequency
  • Gas Flow
  • Geometry
  • Injectors
  • Liquids
  • Mass Flow
  • Momentum
  • Phase
  • Standards
  • Thickness
  • Unsteady Flow

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Internal Combustion Engine (ICE) Technology.
  • Regression Analysis.