An asymptotic analysis of branched-chain ignition of cold combustible gas by hot inert gas

Journal Article · Mon May 01 04:00:00 EDT 1989 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(89)90063-1· OSTI ID:6298306

Niioka, T

An asymptotic analysis of large activation energy with regard to ignition or flame initiation of a cold combustible gas stream coming into contact with a hot inert gas stream is presented. Two-step reaction kinetics, that is, a first-order chain-branching reaction and a second-order chain-termination reaction, responsible for ignition is adopted, and the dependence of ignition time (or flame attachment distance) on the second-order recombination reaction is examined. Equations for ignition delay are given by means of elementary functions, which show that ignition time increases with an increase in recombination reaction rate.

• Research Organization: Institute of High Speed Mechanics, Tohoku Univ., Katahira, Sendai (JP)
• OSTI ID: 6298306
• Journal Information: Combust. Flame; (United States), Journal Name: Combust. Flame; (United States) Vol. 76:2; ISSN CBFMA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
ACTIVATION ENERGY
ASYMPTOTIC SOLUTIONS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION KINETICS
ENERGY
EQUATIONS
FLAMES
FLUIDS
GASES
KINETICS
REACTION KINETICS
RECOMBINATION