A Thermochemical Transport Model for Analysis of Hot-Spot Formation in Energetic Materials.

Abstract

The focus of this research is on the prediction of inadvertent ignition and detonation of condensed-phase, energetic materials. Specifically, the work focuses on hot spot formation in high-energy propellants and explosives. A viscoplastic pore collapse model is developed to analyze the potential for hot spot formation in porous, condensed-phase, energetic materials. This model treats the dynamics and thermodynamics of a collapsing spherical void that has been subjected to weak shock loading. An volume-averaged energy balance is used to track temporal variations of the pore gas temperature, and a finite-difference method is used to solve the complete condensed-phase energy equation in the vicinity of a material discontinuity. Results from sample calculations focus on the interfacial energy balance in predicting the rate of localized temperature increase during shock compression.

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Document Details

Document Type
Technical Report
Publication Date
Dec 02, 1994
Accession Number
ADA290441

Entities

People

  • David Bonnett
  • P. B. Butler

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Chemical Properties
  • Chemical Reactions
  • Conduction (Heat Transfer)
  • Differential Equations
  • Energetic Materials
  • Energy
  • Energy Production
  • Equations
  • Explosives
  • Heat Transfer
  • Hot Spots
  • Liquid Explosives
  • Materials
  • Propellants
  • Thermal Conductivity
  • Thermodynamics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Computational Fluid Dynamics (CFD)
  • Rocket Propulsion.