LES modeling of premixed combustion using a thickened flame approach coupled with FGM tabulated chemistry
LES modeling of premixed combustion using a thickened flame approach coupled with FGM tabulated chemistry
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DOI：
10.1016/j.combustflame.2011.01.005
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发表时间：
2011-09
影响因子：
4.4
通讯作者：
G. Kuenne;A. Ketelheun;J. Janicka
中科院分区：
文献类型：
--
作者：
G. Kuenne;A. Ketelheun;J. Janicka
本文采用小火焰生成流形（FGM）表列化学方法结合火焰增稠方法对预混燃烧进行大涡模拟。二维流形被用来描述的混合分数和进展变量的化学。一维火焰的模拟已被用来验证列表化学和LES求解器的耦合，其中的重要功能，如火焰传播的网格依赖性仔细解决。最后，将该方法应用于包含复杂几何形状的旋流喷嘴的预混旋流燃烧器的湍流火焰。速度，物种和温度的结果与实验数据进行了比较。从而使用不同的效率函数来显示与该模型参数相关的灵敏度。还讨论了有关动力增稠、数值精度和计算效率的一些问题。
Flamelet Generated Manifolds (FGM) tabulated chemistry is used in combination with a thickened flame approach to perform Large Eddy Simulation (LES) of premixed combustion. Two-dimensional manifolds are used to describe the chemistry by the mixture fraction and progress variable. Simulations of one-dimensional flames have been used to verify the coupling of the tabulated chemistry and the LES solver where important features like the grid dependence of flame propagation are carefully addressed. Finally, the method is applied to the turbulent flame of a premixed swirl burner including the complex geometry of the swirl nozzle. Results of the velocity, species and temperature are compared with experimental data. Thereby different efficiency functions are used to show the sensitivity related to this model parameter. Some aspects regarding dynamic thickening, numerical accuracy and computational efficiency are also addressed.