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

Kočí, Petr; Isoz, Martin; Plachá, Marie; Arvajová, Adéla Buzková; Václavík, Marek; Svoboda, Miloš; Price, Emily; Novák, Vladimír; Thompsett, David

doi:10.1016/j.cattod.2017.12.025

Cited by 57 publications

(46 citation statements)

References 35 publications

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“…The remaining models will be only outlined here. The pore-scale flow model is described in detail in [2]. The pore-scale filtration model is a subject of an individual article [4].…”

Section: Developed Modelsmentioning

confidence: 99%

“…Note that in the pore-scale, the geometry corresponds to the data from 3D x-ray tomography with tolerance of approximately 1 µm. For a detailed description of reconstruction of pore-scale filter morphology, see [6] or [2]. In the present paper, we examine three different structures with cordiarite filter substrates coated with γ-Al 2 O 3 , see Fig.…”

Section: Realistic Macro-scale Model Geometry Generationmentioning

confidence: 99%

“…The flow model in both macro-and pore-scale [2] was implemented under assumptions of an isothermal laminar flow at a steady-state. Furthermore, the gas was considered to be ideal and Newtonian.…”

Section: Flow Governing Equationsmentioning

confidence: 99%

“…The present research is focused on catalytic converters for conversion of health and environment endangering gases, e.g. CO, hydrocarbons or nitrogen oxides (NO x ) and filters trapping the particulate matter (PM) such as the soot and similar substances [2].…”

Section: Introductionmentioning

confidence: 99%

“…With the ongoing development of numerical tools and available computing power, the methods of computational fluid dynamics (CFD) have become a useful tool for understanding the behavior of catalytic filters. In this work, we build on previously published results [2] and prepare a geometrically realistic CFD 3D macro-scale model of the flow in a monolithic catalytic filter.…”

Section: Introductionmentioning

confidence: 99%

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Geometrically Realistic Macro-Scale Model for Multi-Scale Simulations of Catalytic Filters for Automotive Gas Aftertreatment

Hlavatý¹,

Isoz²,

Plachá³

et al. 2020

Topical Problems of Fluid Mechanics 2020

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This paper is part of a research focused on simulating (i) the catalytic conversion of environment endangering gases, and (ii) trapping of the particulate matter in automotive exhaust gas aftertreatment. Historically, the catalytic conversion and the filtration of soot particles were performed in independent devices. However, recent trend is to combine the catalytic converter and soot filter into a single device, the catalytic filter. Compared to the standard two-device system, the catalytic filter is more compact and has lower heat losses. Nevertheless, it is highly sensitive to the catalyst distribution. This study extends our recently developed methodology for pore-scale simulations of flow, diffusion and reaction in the coated catalytic filters. The extension consists of enabling data transfer from macro-to pore-scale models by preparing geometrically realistic macro-scale CFD simulations. The simulation geometry is based on XRT scans of real-life catalytic filters. The flow data from the newly developed macro-scale model are mapped as boundary conditions into the pore-scale simulations and used to improve the estimates of the catalytic filter filtration efficiency.

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“…The remaining models will be only outlined here. The pore-scale flow model is described in detail in [2]. The pore-scale filtration model is a subject of an individual article [4].…”

Section: Developed Modelsmentioning

confidence: 99%

Section: Realistic Macro-scale Model Geometry Generationmentioning

confidence: 99%

Section: Flow Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Geometrically Realistic Macro-Scale Model for Multi-Scale Simulations of Catalytic Filters for Automotive Gas Aftertreatment

Hlavatý¹,

Isoz²,

Plachá³

et al. 2020

Topical Problems of Fluid Mechanics 2020

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Computational Fluid Dynamics

Wehinger¹

2022

Kirk-Othmer Encyclopedia of Chemical Technology

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Computational fluid dynamics (CFD) is considered as a powerful modeling tool in the chemical technology. It can be used to gain fundamental understanding and therefore complement experiments, carry out sensitivity studies, or design highly customized reactor equipment if coupled with Computer‐Aided Design (CAD) and additive manufacturing (3D printing). CFD models in chemical engineering are challenging, since most of the problems are multiscale, multiphase, and multiphysics in nature. This article presents the fundamentals of governing equations, mesh generation, and solving with the finite volume method as well as modeling approaches for special phenomena being relevant for chemical engineering, such as heat transfer, turbulence, chemically reacting flow, and multiphase flow. Finally, the recent progress of CFD models for stirred‐tank reactors, packed‐bed reactors, and fluidized‐bed reactors is discussed.

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New Dimensions in Catalysis Research with Hard X‐Ray Tomography

Das

Pashminehazar

Sharma

et al. 2022

Chemie Ingenieur Technik

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The structure and function of solid catalysts are inseparably linked at length scales from nm to cm and beyond. Hard X-ray tomography offers unique potential for spatially-resolved characterization by combining flexible spatial resolution with a range of chemical contrasts. However, the full capabilities of hard X-ray tomography have not been widely explored in the catalysis community. This review highlights modern advances in hard X-ray tomography using synchrotron radiation. Case studies from model to technical scale illustrate the bright future of X-ray tomography in catalysis research.

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

Cited by 57 publications

References 35 publications

Geometrically Realistic Macro-Scale Model for Multi-Scale Simulations of Catalytic Filters for Automotive Gas Aftertreatment

Geometrically Realistic Macro-Scale Model for Multi-Scale Simulations of Catalytic Filters for Automotive Gas Aftertreatment

Computational Fluid Dynamics

New Dimensions in Catalysis Research with Hard X‐Ray Tomography

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