Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10264690 | Combustion and Flame | 2012 | 17 Pages |
Abstract
Results from two and three-dimensional DNS of turbulent premixed methane-air combustion show that mixing rates and conditional statistics of species mass fractions depend on species diffusivities and the combustion regime. Zero-dimensional PDF model results obtained for the two-dimensional DNS case show that the EMST-DD model best reproduces the features that characterize differential diffusion in the DNS. The essential feature of the EMST-DD model, which accounts for its success in turbulent premixed combustion, is that differential mixing rates are imposed within a model which mixes locally in composition space.
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Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Edward S. Richardson, Jacqueline H. Chen,