A New Energy-based Model for the Prediction of Primary Atomization of Urea-Water Sprays 2009-01-0902
The aim of this work is the development of an energy-based model to predict primary break-up of urea and water (Ad Blue) sprays in condition typical of Selective Catalyst Reduction (SCR) systems. The atomization model for Ad Blue injection, developed in the present investigation, performs an energy balance of the liquid column to asses its deformation near the nozzle exit and to predict the dimension of droplets after the primary break-up. To formulate the energy balance it is necessary to evaluate several terms: the theoretical kinetic energy of the jet in absence of dissipation, its real kinetic energy, the fraction of energy dissipated due to turbulence effects, the surface energy before break-up, the surface energy of the droplets after the break-up. The model was implemented in the KIVA3v code and experimental data from Malvern analysis were used for the validation.
Citation: de Risi, A., Donateo, T., Sciolti, A., Calò, M. et al., "A New Energy-based Model for the Prediction of Primary Atomization of Urea-Water Sprays," SAE Technical Paper 2009-01-0902, 2009, https://doi.org/10.4271/2009-01-0902. Download Citation
Author(s):
Arturo de Risi, Teresa Donateo, Aldebara Sciolti, Michele Calò, Maria Rosaria Gaballo
Affiliated:
University of Salento (Italy), CVIT – Robert Bosch (Italy)
Pages: 7
Event:
SAE World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Diesel Exhaust Emission Control, 2009-SP-2254
Related Topics:
Catalysts
Selective catalytic reduction
Turbulence
Nozzles
Water
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