Effects of subgrid scale and combustion modelling on flame structure of a turbulent premixed flame within LES and tabulated chemistry framework

Effects of subgrid scale and combustion modelling on flame structure of a turbulent premixed flame within LES and tabulated chemistry framework
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亚网格尺度和燃烧建模对 LES 和表格化学框架内湍流预混火焰火焰结构的影响

DOI:
10.1080/13647830.2017.1305514
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发表时间:
2017
影响因子:
1.3
通讯作者:
Janicka
Janicka
中科院分区:
工程技术4区
文献类型:
--
作者:
Hosseinzadeh;Sadiki;di Mare;Janicka

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研究了燃烧和亚网格尺度(SGS)模型对湍流预混火焰整体火焰特性的影响。这是在平均流量统计、方差和火焰表面方面实现的。特别是对化学火焰结构进行了分析和比较。采用人工增厚火焰(ATF)方法,结合火焰生成流形(FGM)和大涡过滤列表化学(F-TACLES)方法进行了研究。SGS起皱的动力学计算采用了类似Germano的程序,确保了两种模型的总火焰表面守恒。结果表明,使用动态SGS起皱模型可以改善结果。虽然两种燃烧模型的结果在统计、均值和方差方面表现出很好的一致性,但分解后的火焰表面隐藏着不同的动态行为。
The effects of combustion and SubGrid Scale (SGS) modelling on the overall flame characteristics of a turbulent premixed flame are investigated. This is achieved in terms of mean flow statistics, variances and flame surfaces. In particular, the chemical flame structure is analysed and compared. The Artificially Thickened Flame (ATF) approach coupled with the Flamelet Generated Manifolds (FGMs) and Filtered TAbulated Chemistry for LES (F-TACLES) approaches are used for this investigation. A Germano like procedure for dynamical calculation of SGS wrinkling is used which ensures the conservation of the total flame surface for both models. It turns out that using the dynamic SGS wrinkling model improves the results. Although the results of both combustion models in terms of statistics, mean and variances show very good agreement, the resolved flame surfaces hide different dynamic behaviour.
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发表时间: 2012
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