A three variable thermokinetic model of ignition is devised to describe the gas-phase oxidation of hydrocarbons in CSTR. For a single set of thermokinetic parameters, the model displays steady states, bistability, cool flame oscillation, simple ignition oscillation, and complex ignition-cool flame oscillations, when the reactant pressure P and vessel temperature T0 are varied as control parameters. The predicted P-T0 state diagram compares fairly well with the experimental finding for the system of acetaldehyde/oxygen. The model also predicts interesting bifurcation sequences of complex periodic states. The proposed skeleton model is justified qualitatively by considering detailed kinetics in the oxidation of acetaldehyde.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry