218102 乱流予混合火炎のラージエディシミュレーションのための動的火炎厚さ拡大モデル(OS11 次世代熱工学,オーガナイズド・セッション)

概要

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A dynamic model of the subgrid scale wrinkling factor for large eddy simulation (LES) of turbulent combustion is developed. The model is based on that proposed by Charlette et al. in the thickened flame model context. This model is modified to be capable of treating weak turbulent cases. Two and three-dimensional LES of V-flames are performed with this modified dynamic model. The results of the two-dimensional simulations are compared to those obtained from two-dimensional simulations without the dynamic formulation and those of the three-dimensional simulation to an experiment conducted with the combustion chamber of the identical geometry. These comparisons demonstrate the availability of the dynamic formulation and that the formulation is especially useful when the appropriate values for the model constant to calculate the subgrid scale wrinkling factor are not empirically available.
一般社団法人日本機械学会の論文
2011-03-17