Combustion waves in a model with chain branching reaction and their stability
| Autor: | Vladimir Gubernov, Geoff Mercer, Harvinder S. Sidhu |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Reaction mechanism
Materials science General Chemical Engineering FOS: Physical sciences General Physics and Astronomy Energy Engineering and Power Technology Pattern Formation and Solitons (nlin.PS) General Chemistry Mechanics Combustion Branching (polymer chemistry) Left behind Thermal diffusivity Nonlinear Sciences - Pattern Formation and Solitons Fuel Technology Modeling and Simulation Traveling wave Physics::Chemical Physics Adiabatic process |
| Zdroj: | Combustion Theory and Modelling. 12:407-431 |
| ISSN: | 1741-3559 1364-7830 |
| Popis: | In this paper the travelling wave solutions in the adiabatic model with two-step chain branching reaction mechanism are investigated both numerically and analytically in the limit of equal diffusivity of reactant, radicals and heat. The properties of these solutions and their stability are investigated in detail. The behaviour of combustion waves are demonstrated to have similarities with the properties of nonadiabatic one-step combustion waves in that there is a residual amount of fuel left behind the travelling waves and the solutions can exhibit extinction. The difference between the nonadiabatic one-step and adiabatic two-step models is found in the behaviour of the combustion waves near the extinction condition. It is shown that the flame velocity drops down to zero and a standing combustion wave is formed as the extinction condition is reached. Prospects of further work are also discussed. Comment: pages 32, figures 23 |
| Databáze: | OpenAIRE |
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