The focus of this paper is the validation of a Computational Fluid Dynamic (CFD) code with respect to combustion processes. To perform this validation, the emission results from a numerical model of a simple combustor are compared to experimental results obtained from a physical model that has the exact same dimensions and configuration as the numerical model. FLUENT was the numerical CFD code used for this study. Both the numerical model and the experimental apparatus are two-dimensional, vertical combustors that inject methane through a 2 mm slot at the combustor base. Air is injected through 6 mm slots placed 6 mm on each side of the fuel injection slot. The combustion chamber is a 300 mm long tube that has a wall thickness of 5 mm. For both the experimental and numerical results, the equivalence ratio was varied from 1 to 1.5 The results obtained at the exit of the chamber show that the temperature predictions match the model within 2.5%, the CO predictions match the model within 14.75%, and the CO2 predictions match the model within 15.91%. This study shows that the results from FLUENT are consistent with the experimental results. The percentage error shows a slight difference between the numerical and physical results, but these errors are acceptable because of the assumptions made and the nature of numerical modeling.

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