TY - JFULL AU - Zohreh Orshesh PY - 2012/10/ TI - Numerical Study of Oxygen Enrichment on NO Pollution Spread in a Combustion Chamber T2 - International Journal of Mechanical and Mechatronics Engineering SP - 1847 EP - 1853 VL - 6 SN - 1307-6892 UR - https://publications.waset.org/pdf/1881 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 69, 2012 N2 - In this study, a 3D combustion chamber was simulated using FLUENT 6.32. Aim to obtain detailed information on combustion characteristics and _ nitrogen oxides in the furnace and the effect of oxygen enrichment in a combustion process. Oxygenenriched combustion is an effective way to reduce emissions. This paper analyzes NO emission, including thermal NO and prompt NO. Flow rate ratio of air to fuel is varied as 1.3, 3.2 and 5.1 and the oxygen enriched flow rates are 28, 54 and 68 lit/min. The 3D Reynolds Averaged Navier Stokes (RANS) equations with standard k-ε turbulence model are solved together by Fluent 6.32 software. First order upwind scheme is used to model governing equations and the SIMPLE algorithm is used as pressure velocity coupling. Results show that for AF=1.3, increase the oxygen flow rate of oxygen reduction in NO emissions is Lance. Moreover, in a fixed oxygen enrichment condition, increasing the air to fuel ratio will increase the temperature peak, but not the NO emission rate. As a result, oxygen enrichment can reduce the NO emission at this kind of furnace in low air to fuel rates. ER -