Large Eddy Simulation of the Sandia Flame Series (D-F) using the Eulerian stochastic field method
Large Eddy Simulation of the Sandia Flame Series (D-F) using the Eulerian stochastic field method
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DOI：
10.1016/j.combustflame.2010.05.010
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发表时间：
2010-09-01
影响因子：
4.4
通讯作者：
Prasad, V. N.
中科院分区：
文献类型：
--
作者：
Jones, W. P.;Prasad, V. N.
本文用大涡模拟方法计算了三种局部熄灭程度增加的湍流甲烷射流火焰（Sandia Flames D-F）。最小的未解决的规模的流量，其中发生燃烧，表示使用过滤的概率密度函数方法，其中相应的演化方程直接求解。一个动态模型的子网格应力与一个简单的梯度扩散近似的标量通量的应用与子过滤器尺度混合的线性均方估计封闭。一个增广还原机制（ARM）来自完整的GRI 3.0机制被纳入描述的化学反应。结果表明，该方法在定量捕捉有限速率效应，如熄灭和再点燃湍流火焰的能力。(C)2010燃烧研究所。爱思唯尔公司出版All rights reserved.
Three turbulent piloted methane jet flames with increasing levels of local extinction (Sandia Flames D-F) have been computed using Large Eddy Simulation. The smallest unresolved scales of the flow, in which combustion occurs, are represented using the filtered probability density function method where the corresponding evolution equation is solved directly. A dynamic model for the sub-grid stresses together with a simple gradient diffusion approximation for the scalar fluxes is applied in conjunction with the linear mean square estimation closure for sub-filter scale mixing. An augmented reduced mechanism (ARM) derived from the full GRI 3.0 mechanism is incorporated to describe the chemical reaction. The results demonstrate the ability of the method in capturing quantitatively finite rate effects such as extinction and re-ignition in turbulent flames. (C) 2010 The Combustion Institute. Published by Elsevier Inc. All rights reserved.