naa a22 4500 510819850 CHVBK 20180411083526.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11814-013-0155-z doi (NATIONALLICENCE)springer-10.1007/s11814-013-0155-z Selective catalytic reduction converter design: The effect of ammonia nonuniformity at inlet [Elektronische Daten] [Thiyagarajan Paramadayalan, Atul Pant] A three-dimensional CFD model of SCR converter with detailed chemistry is developed. The model is used to study the effects of radial variation in inlet ammonia profile on SCR emission performance at different temperatures. The model shows that radial variation in inlet ammonia concentration affects the SCR performance in the operating range of 200-400 °C. In automotive SCR systems, ammonia is non-uniformly distributed due to evaporation/reaction of injected urea, and using a 1D model or a 3D model with flat ammonia profile at inlet for these conditions can result in erroneous emission prediction. The 3D SCR model is also used to study the effect of converter design parameters like inlet cone angle and monolith cell density on the SCR performance for a non-uniform ammonia concentration profile at the inlet. The performance of SCR is evaluated using DeNO x efficiency and ammonia slip. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Catalytic Converter nationallicence SCR Converter nationallicence CFD nationallicence Numerical Modeling nationallicence Monolith Reactor nationallicence Chemical Kinetics nationallicence Paramadayalan Thiyagarajan GM Powertrain-India, Engine CAE, GM Tech Center, 560066, Bangalore, India aut Pant Atul Global General Motors R&D, India Science Lab, GM Tech Center, 560066, Bangalore, India aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/12(2013-12-01), 2170-2177 0256-1115 30:12<2170 2013 30 11814 https://doi.org/10.1007/s11814-013-0155-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0155-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Paramadayalan Thiyagarajan GM Powertrain-India, Engine CAE, GM Tech Center, 560066, Bangalore, India aut NATIONALLICENCE 700 1- Pant Atul Global General Motors R&D, India Science Lab, GM Tech Center, 560066, Bangalore, India aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/12(2013-12-01), 2170-2177 0256-1115 30:12<2170 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer