Implications of the laminar flamelet model in premixed turbulent combustion
Implications of the laminar flamelet model in premixed turbulent combustion
复制标题
层流火焰模型在预混湍流燃烧中的意义
DOI：
10.1016/0010-2180(80)90004-8
复制
发表时间：
1980
影响因子：
4.4
通讯作者：
K. Bray
中科院分区：
文献类型：
--
作者：
P. Libby;K. Bray
以层流小火焰的集合来描述预混湍流火焰的结果被追求，并被证明可以带来对此类火焰中发生的过程的新的物理洞察，并产生用于分析的新模型。特别是，预混燃烧的布雷-莫斯模型的扩展产生了新的湍流传输模型，提供了物理上有吸引力的闭合方案。此外，还开发了化学源项与产物波动耗散之间的物理化学联系，并用于构建该耗散的新模型。类似的考虑导致了其他耗散的新模型。类似的考虑导致了其他耗散效应的新模型。得出的一般结论是，层流火焰模型的一致应用引起了对针对恒定密度、非反应性湍流开发的一些概念对湍流火焰的适用性的怀疑。
The consequences of the description of a premixed turbulent flame in terms of an ensemble of laminar flamelets are pursued and are shown to lead to new physical insight into the processes occurring in such flames and to new models for use in their analysis. In prticular, extension of the Bray-Moss model for premixed combustion leads to new models for turbulent transport providing physically appealing closure schemes. In addition, the physicochemical connection between the chemical source term and the dissipation of product fluctuations is developed and used to construct a new model for that dissipation. Similar considerations lead to new models for other dissipations. Similar considerations lead to new models for other dissipation effects. The general conclusion is reached that consistent application of the laminar flamelet model raises doubts as to the applicability to turbulent flames of some of the notions developed for constant density, nonreactive turbulence.