DOI: 10.1615/ICHMT.2008.CHT
ISBN Print: 978-1-56700-253-9
ISSN: 2578-5486
NUMERICAL SIMULATION OF CONFINED DIFFUSION FLAMES
ABSTRACT
In this paper the numerical simulation of a high swirled confined natural gas diffusion flames is studied. Several factors influencing the combustion process are examined. One of the goals is to study the influence of the turbulence models and the reaction mechanism on the prediction of the flow, temperature fields and modelling of NOx pollutant emissions. The numerical results are compared with the respective works of Meier et al. (2000) and Frassoldati et al. (2005). The numerical calculation has been performed using the commercial code Fluent. The standard k-ε and RSM models are used to describe the turbulent flow. The Eddy dissipation model (6 species) and the Probability Density Function PDF (13 species) are used to model the turbulence-chemistry interaction. A NOx post-processor has been used for predicting NOx emissions from combustors. CFD predictions show a satisfactory agreement with the available data.