The Influence of Chemical Mechanisms on PDF Calculations of Nonpremixed Piloted Jet Flames
نویسندگان
چکیده
There are several previous successful PDF modeling studies [1-3] of the Barlow & Frank nonpremixed piloted jet flames (flames D, E and F) [4]. While there is at least partial understanding of the influence of turbulent mixing models on these calculations [5,6], there has been no systematic study of the influence of the chemical mechanism that is employed. In this work, focusing on flame F (which has significant local extinction and exhibits the strongest sensitivity), we present PDF calculations using six different mechanisms. These range from a 5-step reduced mechanism [7], to the GRI3.0 detailed mechanism [8] which involves 53 species. The principal results considered (which are compared to the experimental data [9]) are means of temperature and species mass fraction conditional on mixture fraction. More details of the current work are provided in [10].
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