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Efficient Modeling of SCR Urea Deposits Formation Using ANSYS Fluent ANSYS Germany GmbH
- Format:
- Book
- Conference/Event
- Author/Creator:
- Sofialidis, Dimitrios, author.
- Conference Name:
- WCX SAE World Congress Experience (2025-04-08 : Detroit, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2025
- Summary:
- This paper presents recent developments of the Euler/Lagrange wall film model which allow the efficient simulation of complete Selective Catalytic Reduction (SCR) systems, used for exhaust gas aftertreatment in diesel and newly designed H2 engines. Since release 2024R2, ANSYS Fluent is equipped with a chemistry model from recent literature to predict homogeneous chemical reactions in the film and heterogeneous reactions between gas and film occurring in SCR systems operating with aqueous urea solutions. The implementation of the chemistry model is first validated against results from ThermoGravimetric Analysis (TGA) measurements. The SCRspecific chemistry, combined with the Lagrangian Wall Film (LWF) model employing an improved wallfilm convective heat transfer model, is then compared favorably with experimental SCR test rig measurements of urea deposits for fifty injection cycles, followed by a relaxation period. The full simulation completes significantly faster due to a new numerical algorithm for the LWF which reduces the number of wall film particles by consolidating groups of particles into a single particle that produces the same overall effect
- Notes:
- Vendor supplied data
- Publisher Number:
- 2025-01-8485
- Access Restriction:
- Restricted for use by site license
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