Özet:

A numerical investigation of NOx formation in natural gas-fired furnace is presented. In order to reduce NOx emissions, a combustion modification technique is applied using the advantage of swirl in a non-premixed combustion process. As NOx is produced at high temperatures, radiation needs to be included in this inquiry. The models of this study are selected of such kind there will be accurate computational results. The finite volume technique (FVM), paired with an extended eddy break-up model and the standard k-ε model, is developed to solve the radiative transfer equation (RTE). The thermal NO mechanism is used to predict the NOx formation. It is clearly shown that swirl can reduce considerably the NOx emission.

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