Quantitative emissions prediction in industrial process furnaces is as difficult as it is important. A wide range of length and time scales must be bridged to capture the flow physics and chemistry of combustion and pollutant formation. This paper focuses on gathering and testing the state of the art for turbulence, mixing and reaction subgrid scale (SGS) models as they are applied to the near burner region using a commercial CFD code. The Fluent® version 5.5 computational fluid dynamics (CFD) code is used to simulate a single port, axisymmetric fuel jet of 50% (by vol.) methane and 50% hydrogen in a co-flowing air stream (Sandia flame HM1a). This configuration is chosen for its simplicity and for the wealth of experimental data available [1]. The intermediate goal is to predict temperature and species concentration accurately that may affect the prediction of NO concentrations in the flue products. Therefore, flow dynamics, heat transfer; combustion and NOx chemistry are important issues and will be analyzed in this paper.

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