Identification of multi-regime detonation development for hydrocarbon fuels

Jiaying Pan, Lei Wang, Ding Yi, Wenkai Liang, Chung K. Law, Haiqiao Wei

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Recently, a detonation response diagram with multiple nonmonotonic boundaries was identified for syngas/air mixtures (Pan et al., 2022), accounting for wide-ranging operation conditions with thermal inhomogeneities. In this work, we have identified the detonation response diagrams of various fuels, especially large hydrocarbons, initiated by temperature gradients under engine-relevant conditions, in both planar and spherical configurations. Results show significant differences in the multi-regime detonation development for different fuels due to reactivity sensitivities and thermophysical properties. Furthermore, the curvature effect in the spherical configuration can cause substantial degeneration of the detonation development, while cool flame partial oxidation of large hydrocarbons can greatly facilitate robust detonation development, suggesting the significance of the interaction between flow inhomogeneities and chemical kinetics.

Original languageEnglish (US)
Article number112864
JournalCombustion and Flame
Volume255
DOIs
StatePublished - Sep 2023

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

Keywords

  • Cool flame partial oxidation
  • Detonation development
  • Hydrocarbon fuel
  • Multi-regime detonation
  • Temperature gradient

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