Large-Eddy Simulation of Premixed Combustion in the Corrugated-Flamelet Regime
Large-Eddy Simulation of Premixed Combustion in the Corrugated-Flamelet Regime
复制标题
波纹火焰流态预混燃烧的大涡模拟
DOI：
10.1080/00102202.2016.1195824
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发表时间：
2016
影响因子：
1.9
通讯作者：
J. Furukawa
中科院分区：
文献类型：
--
作者：
I. Langella;N. Swaminathan;F. Williams;J. Furukawa
摘要采用大涡模拟方法研究了波纹小火焰区贫燃料湍流丙烷-空气本生火焰。亚网格尺度（SGS）建模包括先前开发的总焓处理沿着与三个不同的SGS速度，，模型。在解决过滤的反应速率，一个假定的概率密度函数（PDF）的方法是采用的反应进程变量，关闭其SGS方差的运输方程。使用这三种模型获得的统计数据与测量结果吻合良好，并且一阶矩彼此之间没有显着差异，这表明常用的SGS建模可能足以获得平均速度和反应进度变量。然而，所有三个SGS速度模型未能反映测量双峰的PDF的径向分量的速度在火焰的中心部分。这强调了需要进一步发展的模型所需的反应速率封闭水平的实际LES燃烧的波纹火焰制度。
ABSTRACT Large-eddy simulation (LES) is applied to a fuel-lean turbulent propane-air Bunsen flame in the corrugated-flamelet regime. The subgrid-scale (SGS) modeling includes a previously developed treatment of the total enthalpy along with three different SGS velocity, , models. In addressing the filtered reaction rate, a presumed probability density function (PDF) approach is employed for the reaction-progress variable, closed by a transport equation for its SGS variance. The statistics obtained using the three models are in good agreement with the measurements and do not differ significantly from each other for first-order moments suggesting that commonly used SGS modeling may be adequate to get the mean velocities and reaction progress variable. However, all three SGS velocity models fail to reflect a measured bimodality of the PDF of the radial component of the velocity in the central portion of the flame. This emphasizes a need for further development of models required at the reaction rate closure level for practical LES of combustion in the corrugated-flamelet regime.
影响因子：
4.4
作者：
D. Butz;Yuan Gao;A. Kempf;N. Chakraborty
通讯作者：
D. Butz;Yuan Gao;A. Kempf;N. Chakraborty
影响因子：
4.6
作者：
N. Chakraborty;N. Swaminathan
通讯作者：
N. Chakraborty;N. Swaminathan
湍流预混火焰大涡模拟的标量耗散率建模
影响因子：
3.4
作者：
Dunstan T
通讯作者：
Dunstan T