Numerical calculation of minimum ignition energy for hydrogen and methane fuels

Hong Jip Kim, Suk Ho Chung, Chae Hoon Sohn*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Minimum ignition energies of hydrogen/air and methane/air mixtures have been investigated numerically by solving unsteady one-dimensional conservation equations with detailed chemical kinetic mechanisms. Initial kernel size needed for numerical calculation is a sensitive function of initial pressure of a mixture and should be estimated properly to obtain quantitative agreement with experimental results. A simple macroscopic model to determine minimum ignition energy has been proposed, where the initial kernel size is correlated with the quenching distance of a mixture and evaluated from the quenching distance determined from experiment. The simulation predicts minimum ignition energies of two sample mixtures successfully which are in a good agreement with the experimental data for the ranges of pressure and equivalence ratio.

Original languageEnglish (US)
Pages (from-to)838-846
Number of pages9
JournalKSME International Journal
Issue number5
StatePublished - May 2004
Externally publishedYes


  • Initial Kernel Size
  • Minimum Ignition Energy
  • Quenching Distance

ASJC Scopus subject areas

  • Mechanical Engineering


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