Application of Digital Material Methods to Silicon Carbide Diesel Particulate Filters

Konstandopoulos, Athanasios G.; Vlachos, Nickolas; Patrianakos, Giorgos

doi:10.4271/2007-01-1131

Cited by 7 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ballistic particle deposition simulations (Konstandopoulos, 2000;Konstandopoulos et al, 2002) helped to elucidate the relationships between particle size, exhaust flow rate, and deposit density and permeability. Simulations which include the effect of evolving fluid flow fields can employ either Eulerian particle fields (Konstandopoulos and Kostoglou, 2005;Konstandopoulos and Vlachos, 2007;Vlachos and Konstandopoulos, 2006;Yamamoto et al, 2006) or Lagrangian particle tracking (Wiegmann and Rief, 2006). The pore-scale filter simulations described here fall in the second category and were introduced in by Stewart et al (2004).…”

Section: Modelingmentioning

confidence: 99%

Single wall diesel particulate filter (DPF) filtration efficiency studies using laboratory generated particles

Yang

Stewart

Maupin

et al. 2009

Chemical Engineering Science

View full text Add to dashboard Cite

Section: Modelingmentioning

confidence: 99%

Single wall diesel particulate filter (DPF) filtration efficiency studies using laboratory generated particles

Yang

Stewart

Maupin

et al. 2009

Chemical Engineering Science

View full text Add to dashboard Cite

“…While the study of direct soot oxidation catalyst coatings on the Composite-M filter is on going, these results illustrate the potential advantages that can be realized in terms of low pressure drop, high catalyst loads and appreciable soot reactivity. The rational design and optimization of catalyst coatings on Composite-M structures will further benefit from applications of "Digital Materials" [29][30] approaches, already under way. Some preliminary reconstructions of fibrous walls are shown in Figure 22.…”

Section: Direct Soot Oxidationmentioning

confidence: 99%

Advanced High Porosity Ceramic Honeycomb Wall Flow Filters

Zuberi¹,

Liu²,

Pillai³

et al. 2008

SAE Technical Paper Series

Self Cite

View full text Add to dashboard Cite

A new platform of advanced ceramic composite filter materials for diesel particulate matter and exhaust gas emission control has been developed. These materials exhibit high porosity, narrow pore-size distribution, robust thermo-mechanical strength, and are extruded into high cell density honeycomb structures for wall-flow filter applications. These new high porosity filters provide a structured filtration surface area and a highly connected wall pore space which is fully accessible for multi-phase catalytic reactions. The cross-linked microstructure (CLM™) pore architecture provides a large surface area to host high washcoat/catalyst loadings, such as those required for advanced multi-functional catalysts (4-way converter applications). Data from flow reactor and engine dynamometer studies conducted in house as well as at independent laboratories show low comparative pressure drop of the Composite filter materials versus standard industry powder-based ceramic filters (Cordierite and SiC). Filtration efficiency measurements have also been conducted using particle number concentration based methods, and high trapping efficiencies have been observed on steady state and transient cycles. These filters can be manufactured using GEO2's technology platform from a variety of oxide and non-oxide materials such as: Mullite, SiC and others.

show abstract

“…In this paper we present recent developments in the methodology for porescale simulations of flow, diffusion and catalytic reactions in the wall of catalytic filter. The first attempts of such detailed simulations in Diesel particulate filters were reported in the work of Konstandopoulos and co-workers that used Lattice Boltzmann method for flow solution combined with finite volume method for component diffusion and reaction in virtually generated material structures [15,16,17,18]. Other researchers applied a commercial CFD software to run the flow simulations in 3D reconstructed fibrous filters [19] or ceramic material [20].…”

Section: Introductionmentioning

confidence: 99%

3D reconstruction and pore-scale modeling of coated catalytic filters for automotive exhaust gas aftertreatment

et al. 2019

View full text Add to dashboard Cite

This paper introduces a newly developed methodology for the pore-scale simulation of flow, diffusion and reaction in the coated catalytic filter. 3D morphology of the porous filter wall including the actual distribution of catalytic material is reconstructed from X-ray tomography (XRT) images and further validated with the mercury intrusion porosimetry (MIP). The reconstructed medium is then transformed into simulation mesh for OpenFOAM. Flow through free pores in the substrate as well as through the coated zones is simulated by porousSim-pleFoam solver, while an in-house developed solver is used for component diffusion and reactions. Three cordierite filter samples with different distribution of alumina-based coating ranging from in-wall to on-wall are examined. Veloc-

show abstract

Application of Digital Material Methods to Silicon Carbide Diesel Particulate Filters

Cited by 7 publications

References 2 publications

Single wall diesel particulate filter (DPF) filtration efficiency studies using laboratory generated particles

Single wall diesel particulate filter (DPF) filtration efficiency studies using laboratory generated particles

Advanced High Porosity Ceramic Honeycomb Wall Flow Filters

3D reconstruction and pore-scale modeling of coated catalytic filters for automotive exhaust gas aftertreatment

Contact Info

Product

Resources

About