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A Dynamic Second-order Moment Closure Model for Turbulent Combustion
Author(s): 
Pages: 917-921
Year: Issue:  4
Journal: Journal of Engineering Thermophysics

Keyword:  turbulent combustionsecond-order momentlarge eddy simulationdynamical model;
Abstract: A new turbulent combustion model,dynamic second order moment turbulent combustion model(Dynamic-LES-SOM) is developed considering density fluctuation.The reaction rate consists of filtered reaction rate and the sub-grid scale reaction rate in the model.All the coefficients in the model are evaluated dynamically.A piloted methane-air jet flame(Sandia Flame C) have been simulated with the new model and compared with the experimental data and the results obtained with the original constant density second-order moment closure model(LES-SOM).It is found that the results of the dynamic SOM model agree well with the experiment data,and the performance of the new model is better than the original LES-SOM model.
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