THE EFFECT OF NON-EQUILIBRIUM FREE-RADICAL CONCENTRATION ON IGNITION DELAY IN THE HYDROGEN-AIR SYSTEM

Abstract

This report presents a theoretical discussion of the effect of nonequilibrium quantities of free radicals on the ignition delay in the hydrogen-air system. A correlation was found between the ignition delay computed from complete reaction kinetics and the initial rate of the reaction O2 + H = OH + O. A rate equation is derived in which a modified expression for the total free radical content is substituted for the H concentration. The implications of non-equilibrium amounts of free radicals on the testing and operation of high velocity combustion systems are discussed.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1964
Accession Number
AD0608566

Entities

People

  • R. P. Rhodes

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Arrhenius Equation
  • Burning Rate
  • Chemical Kinetics
  • Chemical Reaction Properties
  • Chemical Reactions
  • Chemistry
  • Combustion
  • Engineers
  • Equations
  • Free Radicals
  • Hydrogen
  • Ignition
  • Ignition Lag
  • Low Temperature
  • Propulsion Systems
  • Rate Of Formation
  • Test Facilities

Readers

  • Combustion science or combustion engineering.