Investigation of subgrid scale wrinkling models and their impact on the Artificially Thickened Flame model in Large Eddy Simulations

被引：0
|
作者：
Broeckhoven, Tim [1 ]
Freitag, Martin [2 ]
Lacor, Chris [1 ]
Sadiki, Amsini [2 ]
Janicka, Johannes [2 ]
机构：
[1] Vrije Univ Brussel VIB, Dept Engn Mech, Pleinlaan 2, B-1050 Brussels, Belgium
[2] Tech Univ Darmstadt, Energy & Powerplant Technol, D-4287 Darmstadt, Germany
来源：
COMPLEX EFFECTS IN LARGE EDDY SIMULATIONS | 2007年 / 56卷
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中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this contribution a Large Eddy Simulation together with the Artificially Thickened Flame approach is used to study a well known experimental set-up consisting of a rectangular dump combustor - ORACLES. The major drawback of artificially thickening the flame is that the interaction between turbulence and flame is altered. To compensate for the inability of small vortices to wrinkle the flame a subgrid scale wrinkling model has to be introduced. In this contribution the influence of the subgrid scale wrinkling on the flame front in a high Reynolds number flow is investigated. Moreover the influence of different approximations for the subgrid scale velocity on the prediction of the flow field and flame structure is studied.
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页码：353 / +
页数：4
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