The influence of channel geometry on the pressure drop in automotive catalytic converters: Model development and validation

I Cornejo, P Nikrityuk, RE Hayes - Chemical Engineering Science, 2020 - Elsevier
This paper presents a detailed physics based model for the pressure drop through a
honeycomb substrate for several channel shapes and void fractions. A CFD-based …

Heat and mass transfer inside of a monolith honeycomb: From channel to full size reactor scale

I Cornejo, P Nikrityuk, RE Hayes - Catalysis Today, 2022 - Elsevier
This paper is devoted to the multi-scale model of the heat and mass transfer inside of a
honeycomb monolith substrate. Due to computational limitations, monoliths are modelled as …

Experimental and numerical investigations of flow through catalytic converters

HA Ibrahim, WH Ahmed, S Abdou… - International Journal of …, 2018 - Elsevier
The need for improved fuel economy, while meeting more stringent global vehicle emission
standards, continues to grow with the increasing demand for environmental protection and …

Numerical study on the optimum injection of urea–water solution for SCR DeNOx system of a heavy-duty diesel engine to improve DeNOx performance and reduce …

SJ Jeong, SJ Lee, WS Kim - Environmental Engineering Science, 2008 - liebertpub.com
Optimization of the urea dosing system to maximize deNOx performance and to minimize
NH3 slip during load changes is one of the main challenges for the mobile application of the …

Pressure correction for automotive catalytic converters: A multi-zone permeability approach

I Cornejo, P Nikrityuk, RE Hayes - Chemical Engineering Research and …, 2019 - Elsevier
This paper presents an improved model for pressure drop in a honeycomb monolith reactor,
which configuration is widely used in automotive exhaust gas after treatment systems. The …

CFD-Modeling of fluid domains with embedded monoliths with emphasis on automotive converters

M Hettel, E Daymo, T Schmidt… - Chemical Engineering and …, 2020 - Elsevier
A new approach for calculating flow domains with embedded monoliths is presented,
focusing on a system suitable for an automotive converter. Using appropriate boundary …

Entry length convective heat transfer in a monolith: The effect of upstream turbulence

I Cornejo, G Cornejo, P Nikrityuk, RE Hayes - International Journal of …, 2019 - Elsevier
In a typical practical monolith reactor implementation, turbulent flow in a large pipe or inlet
header enters small monolith channels. After some distance the flow becomes fully …

On the use of dual cell density monoliths

I Cornejo, G Garreton, RE Hayes - Catalysts, 2021 - mdpi.com
Monolith-type substrates are extensively used in automotive catalytic converters and have
gained popularity in several other industrial processes. Despite their advantages over …

Towards a fully predictive multi-scale pressure drop model for a wall-flow filter

IMV Mesquida, I Cornejo, P Nikrityuk, R Greiner… - … Research and Design, 2020 - Elsevier
This paper presents a detailed study of the fluid dynamics inside a wall-flow filter and
proposes a new pressure drop model. A 3D channel scale computational model of a filter …

[HTML][HTML] Automotive catalyst design for uniform conversion efficiency

SF Benjamin, Z Liu, CA Roberts - Applied Mathematical Modelling, 2004 - Elsevier
This paper describes a computational fluid dynamics (CFD) technique for the prediction of
uniform conversion efficiency across the monolith of an automotive catalytic converter …