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Modeling and simulation of the injection of urea-water-solution for automotive SCR DeNOx-systems

Paper ID Volume ID Publish Year Pages File Format Full-Text
48789 46522 2007 9 PDF Available
Title
Modeling and simulation of the injection of urea-water-solution for automotive SCR DeNOx-systems
Abstract

The evaporation of water from a single droplet of urea water solution is investigated theoretically by a Rapid Mixing model and a Diffusion Limit model, which also considers droplet motion and variable properties of the solution. The Rapid Mixing model is then implemented into the commercial CFD code Fire 8.3 from AVL Corp. Therein, the urea water droplets are treated with Lagrangian particle tracking. The evaporation model is extended for droplet boiling and thermal decomposition of urea. CFD simulations of a SCR DeNOx-system are compared to experimental data to determine the kinetic parameters of the urea decomposition. The numerical model allows to simulate SCR exhaust system configurations to predict conversion and local distribution of the reducing agent.

Keywords
Evaporation; Thermal decomposition; Urea-water-solution; Simulation; Injection; CFD; SCR; NOx
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Modeling and simulation of the injection of urea-water-solution for automotive SCR DeNOx-systems
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 70, Issues 1–4, 31 January 2007, Pages 119–127
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us