This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
CFD Simulations of Transient Soot Trapping and Regeneration in a Diesel Particulate Filter
Technical Paper
2004-01-2658
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A transient, 3-dimensional, continuum CFD model of soot loading and regeneration has been developed for a single channel unit in a diesel particulate filter. The detailed model is used to predict the soot loading, velocity, temperature, and species distributions in both the air channels and porous walls of the filter. The simulation is performed in two phases: loading and regeneration. In the loading phase, soot profiles are estimated for a clean filter using a steady-state simulation. In the second phase, transient regeneration is modeled using a single-step, irreversible heterogeneous mechanism is used to predict the formation of carbon monoxide and carbon dioxide products during the regeneration process, incorporating a fractionization scheme. Reaction rates are predicted via an Arrhenius rate law, but may be tempered due to diffusion-limiting conditions in the porous reaction zone. Simulations are performed with a commercial CFD package and user-defined functions. This model may be used to make predictions of heat-up behavior and to relate material property data to experimental observations.
Recommended Content
Authors
Topic
Citation
Wangard, W., Egelja, A., and Metwally, H., "CFD Simulations of Transient Soot Trapping and Regeneration in a Diesel Particulate Filter," SAE Technical Paper 2004-01-2658, 2004, https://doi.org/10.4271/2004-01-2658.Also In
References
- Bhatia Garima Gunasekaran Natarajan “Heat-Up of Diesel Particulate Filters: 2D Continuum Modeling and Experimental Results,” 2003-01-0837 Diesel Emission Measurement and Modeling (SP-1755/SP-1754CD), 2003 SAE World Congress Detroit, MI
- Konstandopolous A.G. Skaperdas E. Warren, J. Allansson R. SAE Technical Paper Series 1999-01-0468 “Optimized Filter Design and Selection Criteria for Continuously Regenerating Diesel Particulate Traps,” International Congress and Exposition Detroit, MI March 1999
- Huynh C.T. Johnson J.H. Yang, S.L. Bagley, S.T. Warner, J.R. SAE Technical Paper Series 2003-01-0841 “A One-Dimensional Computational Model for Studying the Filtration and Regeneration Characteristics of a Catalyzed Wall-Flow Diesel Particulate Filter” 2003 SAE World Congress Detroit, MI
- “FLUENT 6.1 User Guide” Fluent, Inc. Lebanon, NH Sept 2003
- “CHEMKIN Collection Release 3.6 User Manual” Reaction Design San Diego, CA September 2000