Experimental Study of Blast Mitigation in a Water Mist

Abstract

This report presents results of experiments on the mitigation of explosive blast using water mist. Water mists in the present study were produced by nozzles distributed around a test arena. Tests were conducted using different water mist sizes and nozzle arrangements to evaluate blast mitigation effects for in-air bare explosive charges as well as charges submerged in water and glycerine. The effects on blast wave pressure results due to the experimental blast pressure gauge mounting and set-up, as well as due to the effects of confinement in the test area, are analysed and discussed. Blast attenuation was evaluated using the CTH hydrocode and concluded that the phase transformation and mitigate liquid breakdown mechanism, under expansion by the blast products, must be considered in order to model blast mitigation adequately and to accurately evaluate mitigation effects at large stand-off distances.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2006
Accession Number
ADA465909

Entities

People

  • A. D. Resnyansky
  • T. G. Delaney

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • C4I
  • Counter IED
  • Ground and Sea Platforms
  • Human Systems
  • Weapons Technologies

DTIC Thesaurus Topics

  • Blast Waves
  • Dynamic Pressure
  • Equations
  • Explosions
  • Explosive Charges
  • Explosive Devices
  • Explosives
  • Improvised Explosive Devices
  • Materials
  • Numerical Analysis
  • Phase Transformations
  • Pressure Gages
  • Pressure Measurement
  • Simulations
  • Three Dimensional
  • Weapons
  • Weapons Effects

Readers

  • Explosive Engineering.
  • Fire Suppression Systems Design.