2049 液相反応乱流場に対する Large eddy simulation

概要

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A large eddy simulation (LES) based on a finite volume method was applied to liquid mixing layer flow downstream of a turbulence-generating grid with a chemical reaction. The large eddy probability density function (LEPDF) model and joint LEPDF model were used as a SGS model for a rapid reaction and for a moderately fast reaction, respectively. The results of the LES were compared with the measurements to examine the proposed subgrid-scale (SGS) models. Furthermore, the correlation coefficient in the scale similarity model between the variance of SGS concentration and that of test-filtered concentration was determined using the data of the direct numerical simulation (DNS) of liquid isotropic turbulence. The results show that the correlation coefficient for a liquid flow is 5 times bigger than that for a gas flow. When the appropriate correlation coefficent is given, the LES results are in good agreement with the measurements.
一般社団法人日本機械学会の論文
2000-07-31