Flame propagation into the lean area of the stratified mixture was investigated numerically by simulating the counterflow flames of the lean mixture. The propagating flame into the lean mixture and the burned gas behind it were linked to the counterflow flame configuration of the lean mixture and the opposing gas. Nitrogen and burned gas were opposed to the lean mixture varying their temperature and composition. And the stoichiometry of the lean mixture was also varied widely. The results show that the gas temperature and composition affect the reaction of the lean flame. Fuel reaction of the lean mixture far below the lower flammability limit was supported by the transport of heat and species such as CO and H_2 from the opposing gas. Property of CO production in the supported flame was different from that of self-propagating flame.
|Translated title of the contribution||Study of Flame Propagation into Lean Region of Stratified Mixture by Connterflow Flames|
|Number of pages||6|
|Journal||Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B|
|Publication status||Published - Jun 25 2003|