Comparative investigation of N-heptane droplet ignition in high temperature convective environments

J. Chen, Yiguang Ju, X. F. Peng, B. X. Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A 2-D numerical model was proposed to investigate the ignition of liquid fuel droplets in convective environments at high temperature. This model employed a skeletal mechanism consisting of 34 reactive species and 56 elementary reactions, rather than one-step overall reaction as in normal 2-D droplet ignition models, because the skeletal mechanism for n-heptane reproduces ignition delay times at various temperatures and pressures reasonably well. In present investigation an emphasis was addressed on the comparative analysis of suitability of the model, particularly numerical simulations were compared with experiments available in the literature, or for N-heptane droplets ignition in the convective air at temperature in a range of 1100K-1400K and velocity of 2m/s. The ignition delay time and ignition position were obtained using an ignition criterion based on OH radical mass fraction. The flame behavior after ignition was also studied comparatively. The agreement between numerical simulation and experiments is reasonably good.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007
Pages819-824
Number of pages6
DOIs
StatePublished - May 29 2008
EventASME International Mechanical Engineering Congress and Exposition, IMECE 2007 - Seattle, WA, United States
Duration: Nov 11 2007Nov 15 2007

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume6

Other

OtherASME International Mechanical Engineering Congress and Exposition, IMECE 2007
CountryUnited States
CitySeattle, WA
Period11/11/0711/15/07

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Chen, J., Ju, Y., Peng, X. F., & Wang, B. X. (2008). Comparative investigation of N-heptane droplet ignition in high temperature convective environments. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007 (pp. 819-824). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 6). https://doi.org/10.1115/IMECE2007-43196