Numerical analysis of the flow rig for UWS spray examination in exhaust system-relevant conditions

In the present study, a flow rig with optical access intended for spray investigations in exhaust system-relevant conditions was analysed terms of and temperature area using numerical simulations. The operation examined wide range mass rates, temperatures various forms UWS (urea-water solution) plumes. locations injector thermocouple were verified. Both conventional flash-boiling injections considered to assess effect interaction sprays gas flow. results showed highly uniform visualisation area, only minor fluctuations near walls. A similar observation carried out distribution. It found that extreme operating caused substantial deformations However, selected location allowed us properly observe formation regardless conditions. study test enabled reliable points.