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S4 Ciências e Engenharia do Petróleo |
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Titulo:
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NUMERICAL SIMULATION OF NOX AND CO FORMATION IN NATURAL GAS DIFFUSIVE FLAMES
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Resumo :
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THE PRESENT PAPER DESCRIBES A CONTINUATION OF THE WORK PRESENTED IN ISNARD & GOMES (1998), WHICH INCLUDED THE NUMERICAL MODELING OF THE NATURAL GAS COMBUSTION AND THE NOX FORMATION PROCESS BY CONSIDERING THE ZELDOVICH MECHANISM. ADDITIONALLY, IN THIS WORK IT WAS INVESTIGATED THE CARBON MONOXIDE (CO) FORMATION USING A MORE DETAILED COMBUSTION MODEL. THE NUMERICAL PROCEDURE BASED ON THE FINITE VOLUME FORMULATION INCLUDED THE K-EPSILON TURBULENCE MODEL, THE GENERALIZED FINITE RATE MODEL OF ARRHENIUS AND MAGNUSSEN FOR THE COMBUSTION CALCULATIONS AND THE DISCRETE TRANSFER RADIATION MODEL. THE MAIN GOAL OF THE INQUIRY WAS TO INVESTIGATE THE PERFORMANCE OF SUCH MODELING APPROACH IN PREDICTING NOX AND CO FORMATION AND TO EVALUATE THE INFLUENCE OF THE CO FORMATION IN THE TEMPERATURE FIELD INSIDE THE FURNACE. THE COMPARISONS BETWEEN NUMERICAL AND EXPERIMENTAL RESULTS INDICATED A CLEAR EVOLUTION OF THE MODEL REGARDING THE PREDICTION OF THE TEMPERATURE FIELD, SPECIES CONCENTRATIONS AND A REASONABLE AGREEMENT WITH THE NOX FORMATION TREND.
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Autores :
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Gomes, Marcos S.P.
Isnard, André A.
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Trabalho Completo :
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