Pulsed Spray Structure and Atomisation Techniques.

Abstract

The process of atomisation from diesel injectors is found to persist for a significant proportion of the spray length before impaction on the cylinder wall. Both aerodynamic shear and cavitation appear to be of importance for the liquid jet breakdown. In addition cyclic variations are found in the atomisation and penetration of sprays. The transient nature of the spray initial conditions can cause pile up and coagulation of droplets at the leading edge of the spray pulse for certain cases. Improved modeling of diesel injection requires recognition of these phenomena and this is supported by both modeling and experimental data which have been obtained under realistic engine conditions in a specially developed rig. Keywords: Diesel engines, Sprays, Combustion, Fuel injection.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1987
Accession Number
ADA192280

Entities

People

  • A. J. Yule

Organizations

  • University of Manchester

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Atomization
  • Cameras
  • Classification
  • Computational Fluid Dynamics
  • Diesel Engines
  • Engines
  • High Pressure
  • Ignition
  • Injectors
  • Leading Edges
  • Liquid Jets
  • Measurement
  • Periodic Variations
  • Photographs
  • Pumps
  • Theses
  • Wind Tunnels

Readers

  • Aerosol Science/Aerosol Physics
  • Combustion and Flow Dynamics.
  • Theoretical Analysis.