Interaction of flames of H₂ + O₂ with inert walls

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• 作者：Dabireau ; F. ; Cuenot ; B. ; Vermorel ; O. ; Poinsot ; T.
• 关键词：Flame-wall interaction ; Hydrogen-Oxygen flame ; Complex chemistry ; Direct numerical simulation
• 刊名：Combustion and Flame
• 出版年：2003
• 出版时间：October, 2003
• 年：2003
• 卷：135
• 期：1-2
• 页码：123-133
• 全文大小：234 K

文摘

Numerical simulations of the interaction of a flame of H₂ + O₂ and a wall are performed. Two situations are considered: a premixed flame propagating towards the wall and a diffusion flame staying at a distance from the wall. In both cases the chemical processes controlling the interaction are studied in detail. The thermal fluxes to the wall are evaluated and their maximum values, as well as the duration of the interaction, are compared. The results show that the premixed flame leads to high fluxes to the wall for a short time before quenching. The diffusion flame leads to lower values for the maximum flux, but high fluxes are maintained for a longer time. Finally, the total energy transferred to the wall is comparable for both flames.