This content is not included in your SAE MOBILUS subscription, or you are not logged in.
A One-Dimensional Numerical Model for Diesel Particulate Trap Performance Study during Loading and Regeneration
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 11, 2005 by SAE International in United States
Annotation ability available
A one-dimensional model was developed for honeycomb diesel particulate traps. Quasi-steady state conservation equations of mass and momentum were solved by combining the shooting method and Runge-Kutta method to find the flow velocity and particulate thickness. A filtration model based on the “unit collector” filtration theory was used to determine the transient filtration parameters of the porous wall. Transient conservation equations of energy were solved using fully implicit finite difference method to find the temperature field. Analytical method and experimental data from literature are used to calibrate and validate the model, and good agreement has been achieved. A U-shaped particulate layer thickness distribution is found for a clean trap loading. In the loading process of a catalyzed trap, the pressure drop increases with time at the beginning, then decreases and eventually reaches a steady state. This type of trap behavior has been observed in experiments but cannot be predicted by numerical models assuming uniform particulate layer distribution. The trap regeneration performances are studied using this model. It is found that initially retained particulate matter can be oxidized completely during controlled regeneration while small amount of particulate still remains at the entrance of inlet channel after uncontrolled regeneration. Parametric studies have been carried out and it shows that the trap geometry does not significantly affect trap regeneration behavior.
CitationGuo, Z. and Zhang, Z., "A One-Dimensional Numerical Model for Diesel Particulate Trap Performance Study during Loading and Regeneration," SAE Technical Paper 2005-01-0961, 2005, https://doi.org/10.4271/2005-01-0961.
- Bissett, E. J. Mathematical model of the thermal regeneration of a wall-flow monolith diesel particulate filter Chemical Engineering Science 1984 39 1233 1244
- Bissett, E. J. Shadman, F. Thermal regeneration of diesel particulate monolithic filters AlchE J. 1985 31 753 758
- Konstandopoulos, A. G. Johnson, J. H. Wall-flow diesel particulate filter-their pressure drop and collection efficiency SAE Paper No. 890405 1989
- Konstandopoulos, A. G. Kostoglou, M. Skaperdas, E. Papaioannou, E. Zarvalis, D. Kladopoulou, E. Fundamental studies of diesel particulate filters: transient loading, regeneration and aging SAE Paper No. 2000-01-1016 2000
- Konstandopoulos, A. G. Kostoglou, M. Reciprocating flow regeneration of soot filters Combustion and Flame 2000 121 488 500
- Konstandopoulos, A. G. Kostoglou, M. Periodically reversed flow regeneration of diesel particulate traps SAE Paper No. 1999-01-0469 1999
- Opris, C. N. Johnson, J. H. A 2-D computational model describing the flow and filtration characteristics of a ceramic diesel particulate trap SAE Paper No. 980545 1998
- Opris, C. N. Johnson, J. H. A 2-D computational model describing the heat transfer, reaction kinetics and regeneration characteristics of a ceramic diesel particulate trap SAE Paper No. 980546 1998
- Zhang, Z. Yang, S. L. Johnson, J. H. Modeling and numerical simulation of diesel particulate trap performance during loading and regeneration SAE Paper No. 2002-01-1019 2002
- Kladopoulou, E. A. Yang, S. L. Johnson, J. H. Parker, G. G. A study describing the performance of diesel particulate filters during loading and regeneration-a lumped parameter model for control applications SAE Paper No. 2003-01-0842 2003
- Suresh, A. Khan, A. Johnson, J. H. An experimental and modeling study of cordierite traps-pressure drop and permeability of clean and particulate loaded traps SAE Paper No. 2000-01-0476 2000
- Tan, J. C. Opris, C. N. Baumgard, K. J. Johnson, J. H. A study of the regeneration process in diesel particulate traps using a copper fuel additive SAE Paper No. 960136 1996