On detonation initiation by a temperature gradient for a detailed chemical reaction models
2011 (English)In: Physics Letters A, ISSN 0375-9601, Vol. 375, no 17, 1803-1808 p.Article in journal (Refereed) Published
The evolution from a temperature gradient to a detonation is investigated for combustion mixture whose chemistry is governed by a detailed chemical kinetics. We show that a detailed chemical reaction model has a profound effect on the spontaneous wave concept for detonation initiation by a gradient of reactivity. The evolution to detonation due to a temperature gradient is considered for hydrogen-oxygen and hydrogen-air mixtures at different initial pressures. It is shown that the minimal length of the temperature gradient for which a detonation can be ignited is much larger than that predicted from a one-step chemical model.
Place, publisher, year, edition, pages
2011. Vol. 375, no 17, 1803-1808 p.
Temperature gradient, Detailed chemical model, Deflagration, Detonation
IdentifiersURN: urn:nbn:se:uu:diva-153559DOI: 10.1016/j.physleta.2011.03.026ISI: 000289925400007OAI: oai:DiVA.org:uu-153559DiVA: diva2:417219