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3D Unsteady Modelling of the Loading Process in a Diesel Engine PM-Filter
Technical Paper
2007-01-1132
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Particulate Matter (PM) filters are becoming a standard component of Diesel engines exhaust aftertreatment devices to comply with the forthcoming engine emission regulations. However, cost reduction and durability are still critical issues in particular for the integration of the PM-filter with other components of the after-treatment system (e.g. pre-turbo-catalyst, close-coupled-catalyst, PM-filter, SCR). To respect functional (available temperature and gas composition) and space restraints, very complex shapes may result from the design causing tortuous flow patterns and influencing the flow distribution into the PM-filter. Uneven soot distributions in the filter may cause a non-homogeneous development of filter regeneration, leading to failures, for example due to the occurrence of large temperature gradients during the oxidation of soot deposits. A detailed analysis of flow fields during the loading phase may represent an useful tool to design the filter and its integration into the exhaust system.
In this work an effort for the development of a comprehensive model able to describe both large scale phenomena related to the complete exhaust system and local processes acting in the filter channels is presented. The model is based on a multilevel approach, built on FLUENT CFD solver, and it is capable of predicting the dynamic PM-loading 3D field into the filter. The model may be effectively used for the integration of the PM-filter into the after-treatment device, being able to capture the fundamental dynamic behavior of filtration process with reasonable computational efforts.
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Cordiner, S. and Mulone, V., "3D Unsteady Modelling of the Loading Process in a Diesel Engine PM-Filter," SAE Technical Paper 2007-01-1132, 2007, https://doi.org/10.4271/2007-01-1132.Also In
References
- Sanguedolce A. Ranalli M. Yamamura N. Punke A. Engelhard “Fiat-GM Powertrain development of exhaust system with catalysed particulate filter for diesel passenger car applications” Paper 04A5023, ATA Symposium Bari (Italy) 2004
- Konstandopoulos A.G. Johnson J.H. “Wall-Flow Diesel particulate Filters - Their pressure drop and Collection Efficiency” SAE paper 890405 1989
- Bissett E.J.. “Mathematical Model of the Thermal Regeneration of a Wall-Flow Monolith Diesel Particulate Filter” Chemical Engineering Science 39 7 8 1233 1244 1984
- 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 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 980546 1998
- Montenegro G. Piscaglia F. Ferrari G. Onorati A. Catalano G. Cioffi P. “A 1D Unsteady Thermo-Fluid Dynamic Approach for the Simulation of the Hydrodynamics of Diesel Particulate Filters” SAE paper 2006-01-0262
- York A.P.E. Cox J.P. Watling T.C. Walker A.P. Bergeal D. Allansson R. Levenius M. “Development and Validation of a One-Dimensional Computational Model of the Continuosly Regenerating Diesel Particulate Filter (CR-DPF) System” SAE paper 2005-01-0954
- Piscaglia F. Rutland C.J. Foster D.E. “Development of a CFD Model to Study the Hydrodynamic Characteristics and the Soot Deposition Mechanism on the Porous Wall of a Diesel Particulate Filter” SAE paper 2005-01-0963
- Andreassi L. Cordiner S. Mulone V. Presti M. “A Mixed Numerical-Experimental Analysis Procedure for Non-blocking Metal Supported Soot Trap Design” SAE paper 2002-01-2782
- Wanker R. Wurzenberger J.C. Peters B. Tatschl R. “Integrated 1D and 3D Modeling of Exhaust-Gas Aftertreatment Devices” International Multidimensional Engine Modeling User's Group Meeting 2004
- Pontikakis G. Stamatelos A. Bakakis K. Aravas N. “3-D Catalytic Regeneration and Stress Modeling of Diesel Particulate Filters by ABAQUS FEM Software” SAE paper 2002-01-1017 2002
- Guo Z. Zhang Z. “Multi-Dimensional Modeling nad Simulation of Wall-Flow Diesel Particulate Filter during Loading and Regeneration” SAE paper 2006-01-0265
- Kakac S. Kilkis B. Kulacki F.A. Arinc F. “Convective Heat and Mass Transfer in Porous Media” Kluwer Netherlands 1991
- FLUENT 6.2, User Guide Fluent, Inc. Lebanon, NH 2004
- Piscaglia F. Onorati A. “A Computational Investigation of the Hydrodynamics and of the Soot Deposition Mechanism on the Channel Walls of a Diesel Particulate Filter” 60°Congresso ATI Roma 2005
- Psarianos D.L. “Development of a System for the Measurement of Soot Maldistribution and Pressure Drop Characteristics in Diesel Particulate Filters” University of Thessaly 2002
- 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 2000-01-0476 2000
- Egelja A. Wangard W. Metwally H. “Cfd Simulations of Transient Soot Trapping and Regeneration in a Diesel Particulate Filter” SAE paper 2004-01-2658 2004
- Masoudi M. “Hydrodynamics of Diesel Particulate Filters” SAE paper 2002-01-1016 2002