Numerical Simulations in Selective Catalytic Reduction Systems with an Emphasis on Injection Location

¹ Department of Power System Engineering, Faculty of Mechanical Engineering, University of West Bohemia, Univerzitní 2762/22, 301 00 Pilsen, Czech Republic
² Modelling and Simulations in Technical systems, New Technologies – Research Centre, University of West Bohemia, Univerzitní 2732/8, 301 00 Pilsen, Czech Republic

^* Corresponding author: novakm42@ntc.zcu.cz

Abstract

This paper is a follow-up study to previous research conducted in the field of Selective Catalytic Reduction systems. The objective of this particular study is to identify a suitable injection location for urea water solution within a chosen geometry, matching the distribution commonly used in these systems. Numerical simulations using ANSYS Fluent software were conducted, utilizing an evaporation model that had been fine-tuned based on experimental data. The droplet size injected from the nozzle was also determined from experimental data. The boundary condition applied to the walls was the “Wall-Jet” model, chosen as a compromise for time efficiency. Over one hundred simulations were conducted at more than fifty locations, with the results presented here serving as interim findings. Future research will investigate the application of the recommended injection sites in geometries similar to those used in SCR systems.