Simulations of Flame Acceleration and Deflagration-to-Detonation Transitions in Methane-Air Systems

Abstract

Flame acceleration and deflagration-to-detonation transitions (DDT) in large obstructed channels filled with a stoichiometric methane-air mixture are simulated using a single-step reaction mechanism. The reaction parameters are calibrated using known velocities and length scales of laminar flames and detonations. Calculations of the flame dynamics and DDT in channels with obstacles are compared to previously reported experimental data. The results obtained using the simple reaction model qualitatively, and in many cases, quantitatively match the experiments and are found to be largely insensitive to small variations in model parameters.

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Document Details

Document Type
Technical Report
Publication Date
Mar 17, 2010
Accession Number
ADA520957

Entities

People

  • D. A. Kessler
  • Elaine Oran
  • V. N. Gamezo

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Reactions
  • Chemistry
  • Combustion
  • Combustion Products
  • Computational Fluid Dynamics
  • Deflagration
  • Detonations
  • Explosions
  • Fluid Dynamics
  • Physical Properties
  • Reaction Mechanisms
  • Simulations
  • Specific Heat
  • Steady State
  • Temperature Gradients
  • Thermal Conductivity
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Combustion science or combustion engineering.
  • Computational Modeling and Simulation