A detailed comparison of two sub-grid scale combustion models via large eddy simulation of the PRECCINSTA gas turbine model combustor
A detailed comparison of two sub-grid scale combustion models via large eddy simulation of the PRECCINSTA gas turbine model combustor
复制标题
通过 PRECCINSTA 燃气轮机模型燃烧室的大涡模拟对两种亚网格规模燃烧模型进行详细比较
DOI：
10.1016/j.combustflame.2015.11.031
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发表时间：
2016-02
影响因子：
4.4
通讯作者：
Wang C.J.
中科院分区：
文献类型：
--
作者：
Wang Ping;Fröhlich J.;Maas U.;He Z.X.;Wang C.J.
采用大涡模拟(LES)方法，对燃气轮机模型燃烧室中的两种贫油湍流预混旋转火焰进行了动态增厚火焰(DTF)模型和火焰表面密度(FSD)模型的性能比较。这两个模型在相同的内部有限体积代码中实现，使用相同的数值方法，所有的计算都在相同的块结构贴体曲线网格上进行。大涡模拟结果与实验数据吻合较好。结果表明，对于速度、温度和主要组分的统计预测，对于所考虑的火焰，FSD模型和DTF模型预测的结果非常相似。然而，对于预测次要物种CO的分布，FSD模型的效果不如DTF模型，DTF模型被分析为生成FSD模拟的化学查找表所使用的策略的结果。对粘性流动结构、火焰表面积以及速度功率谱密度进行了分析和比较。本文对湍流预混火焰分解火焰表面积的分析可能是湍流预混火焰大涡模拟研究中的第一次。在所采用的模型常数下，FSD模型产生的火焰前锋面积大约是DTF模型的1.4倍。有趣的是，在ϕ=0.75时，FSD模型得到的分辨火焰表面积约为真实火焰表面积的44%，而对于DTF模型，该值约为31%。此外，还与文献中的结果进行了交叉比较，目前的大涡模拟结果与文献中获得的结果一样好。
A detailed comparison of the performances of a dynamically thickened-flame (DTF) model and a flame surface density (FSD) model is conducted through large eddy simulation (LES) of two fuel-lean turbulent premixed swirling flames in the well-known PRECCINSTA gas turbine model combustor. The two models are implemented in the same in-house Finite-Volume code, with the same numerical method, and all the computations are performed on the same block-structured body-fitted curvilinear grid. Very good agreement between the LES and experimental data is obtained. It shows that for predicting the statistics of velocity, temperature and major species, both the FSD model and the DTF model predict very similar results for the flames under consideration. However, for predicting the distributions of minor species CO the FSD model performs less good as the DTF model, which is analysed to be result from the strategy used to generate the chemistry look up table for the FSD simulation. The coherent flow structures, the flame surface area as well as the power spectra density of velocities are also analysed and compared. The present analysis of the resolved flame surface area might be the first one in the literature of LES of turbulent premixed flame. With the employed model constants, the FSD model yields an approximately 1.4 times as large flame front surface area as the DTF model does. It is also interesting to find that the resolved flame surface area by FSD model is approximately 44% of the real flame surface area for the caseϕ= 0.75, while for the DTF model the value is around 31%. Additionally, a cross-comparison with results in the literature is performed as well and the present LES results are as good as those obtained in the literature.
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影响因子：
4.6
作者：
Ping Wang;X. Bai;M. Wessman;J. Klingmann
通讯作者：
Ping Wang;X. Bai;M. Wessman;J. Klingmann
影响因子：
4.6
作者：
P. Moin;K. Squires;W. Cabot;Sangsan Lee
通讯作者：
P. Moin;K. Squires;W. Cabot;Sangsan Lee
影响因子：
4.4
作者：
I. Boxx;M. Stöhr;C. Carter;W. Meier
通讯作者：
I. Boxx;M. Stöhr;C. Carter;W. Meier
DOI：
10.1023/a:1011477030619
发表时间：
2000-11
期刊：
Flow, Turbulence and Combustion
影响因子：
--
作者：
C. Angelberger;D. Veynante;F. Egolfopoulos
通讯作者：
C. Angelberger;D. Veynante;F. Egolfopoulos
影响因子：
29.5
作者：
N. Syred
通讯作者：
N. Syred