Droplet Breakup Energies and Formation of Ultra-Fine Mist

Abstract

Blast-induced droplet breakup energy absorption and vaporization time scales were estimated for the fragmentation of a 0.5 mm parent droplet into 20 micrometer mono-dispersed droplets. The energy extraction from vaporization was found to be more significant in weakening the shock as compared to droplet breakup energy extraction. The efficiency of the droplet breakup process proved to be critical in increasing the total surface area of the ultra-fine mist (UFM) generated. A 22-fold increase in surface area of the 20 micrometer droplets reduces vaporization time scales, giving the droplets a faster response to shock energy extraction by latent heat absorption.

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Document Details

Document Type
Technical Report
Publication Date
Sep 13, 2006
Accession Number
ADA456548

Entities

People

  • Frederic W. Williams
  • Heather Willauer
  • K. C. Adiga
  • Ramagopal Ananth

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Energy
  • Evaporation
  • Explosions
  • Explosives
  • Flow
  • Flow Fields
  • Heat Energy
  • Heat Of Vaporization
  • High Explosives
  • Latent Heat
  • Microsecond Time
  • Military Research
  • Overpressure
  • Shock Waves
  • Surface Energy
  • Surface Tension
  • Vaporization

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Mathematics or Statistics
  • Molecular Photonics/Laser Physics