Development of a RANS Premixed Turbulent Combustion Model Based on the Algebraic Flame Surface Density Concept
Development of a RANS Premixed Turbulent Combustion Model Based on the Algebraic Flame Surface Density Concept
复制标题
基于代数火焰表面密度概念的 RANS 预混湍流燃烧模型的开发
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
M. Pfitzner
中科院分区：
文献类型：
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作者：
U. Allauddin;M. Pfitzner
近年来，基于分形的火焰表面密度（FSD）代数预混燃烧模型在大涡模拟（LES）中得到了验证。利用理论模型、实验和直接数值模拟（DNS）数据库推导出模型中的分形参数，即截止尺度和分形维数。该模型对低雷诺数到高雷诺数的预混合湍流火焰在常温和高压条件下的传播具有较好的预测效果。几种LES燃烧模型在reynolds -average Navier-Stokes （RANS）环境中有直接对应。在这项工作中，开发了上述LES亚网格尺度FSD燃烧模型的RANS版本。将RANS模型的性能与原LES模型进行了比较，并用实验数据进行了验证。结果表明，该模型的RANS版本与实验数据具有相似的一致性。
Recently, a fractal-based algebraic flame surface density (FSD) premixed combustion model has been derived and validated in the context of large eddy simulation (LES). The fractal parameters in the model, namely the cut-off scales and the fractal dimension were derived using theoretical models, experimental and direct numerical simulation (DNS) databases. The model showed good performance in predicting the premixed turbulent flame propagation for low to high Reynold numbers (Re) in ambient as well as elevated pressure conditions. Several LES combustion models have a direct counterpart in the Reynolds-averaged Navier–Stokes (RANS) context. In this work, a RANS version of the aforementioned LES subgrid scale FSD combustion model is developed. The performance of the RANS model is compared with that of the original LES model and validated with the experimental data. It is found that the RANS version of the model shows similarly good agreement with the experimental data.
DOI：
10.1080/10407782.2016.1257309
发表时间：
2017-01
期刊：
Numerical Heat Transfer, Part A: Applications
影响因子：
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作者：
U. Allauddin;M. Klein;M. Pfitzner;N. Chakraborty
通讯作者：
U. Allauddin;M. Klein;M. Pfitzner;N. Chakraborty
影响因子：
4.4
作者：
Chakraborty, Nilanjan;Cant, R. S.
通讯作者：
Cant, R. S.