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Evaluation of Lattice Boltzmann Method for Reaction-Diffusion Process in a Porous SOFC Anode Microstructure

Paradis, Hedvig LU and Sundén, Bengt LU (2012) ASME 10th International Conference on Nanochannels, Microchannels, and Minichannels In Proceedings of the ASME 10th International Conference Nanochannels, Microchannels and Microchannels p.163-171
Abstract
In the microscale structure of a porous electrode, the transport processes are among the least understood areas of SOFC. The purpose of this study is to evaluate the Lattice Boltzmann Method (LBM) for a porous microscopic media and investigate mass transfer processes with electrochemical reactions by LBM at a mesoscopic and microscopic level. Part of the anode structure of an SOFC for two components is evaluated qualitatively for two different geometry configurations of the porous media. The reaction-diffusion equation has been implemented in the particle distribution function used in LBM. The LBM code in this study is written in the programs MATLAB and Palabos.

It has here been shown that LBM can be effectively used at a... (More)
In the microscale structure of a porous electrode, the transport processes are among the least understood areas of SOFC. The purpose of this study is to evaluate the Lattice Boltzmann Method (LBM) for a porous microscopic media and investigate mass transfer processes with electrochemical reactions by LBM at a mesoscopic and microscopic level. Part of the anode structure of an SOFC for two components is evaluated qualitatively for two different geometry configurations of the porous media. The reaction-diffusion equation has been implemented in the particle distribution function used in LBM. The LBM code in this study is written in the programs MATLAB and Palabos.

It has here been shown that LBM can be effectively used at a mesoscopic level ranging down to a microscopic level and proven to effectively take care of the interaction between the particles and the walls of the porous media. LBM can also handle the implementation of reaction rates where these can be locally specified or as a general source term. It is concluded that LBM can be valuable for evaluating the risk of local harming spots within the porous structure to reduce these interaction sites. In future studies, the information gained from the microscale modeling can be coupled to a macroscale CFD model and help in development of a smooth structure for interaction of the reforming reaction and the electrochemical reaction rates. This can in turn improve the cell performance. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Porous media, SOFC, LBM, MATLAB, Palabos, Microscale, Transport processes, Image reconstruction
in
Proceedings of the ASME 10th International Conference Nanochannels, Microchannels and Microchannels
pages
10 pages
conference name
ASME 10th International Conference on Nanochannels, Microchannels, and Minichannels
external identifiers
  • Other:ICNMM2012-73163
  • Scopus:84882365964
ISBN
978-0-7918-4479-3
DOI
10.1115/ICNMM2012-73163
language
English
LU publication?
yes
id
c7413df8-a2a0-4e8f-b604-7fb20f5d477f (old id 4009919)
date added to LUP
2013-09-06 13:24:51
date last changed
2016-10-13 05:03:30
@misc{c7413df8-a2a0-4e8f-b604-7fb20f5d477f,
  abstract     = {In the microscale structure of a porous electrode, the transport processes are among the least understood areas of SOFC. The purpose of this study is to evaluate the Lattice Boltzmann Method (LBM) for a porous microscopic media and investigate mass transfer processes with electrochemical reactions by LBM at a mesoscopic and microscopic level. Part of the anode structure of an SOFC for two components is evaluated qualitatively for two different geometry configurations of the porous media. The reaction-diffusion equation has been implemented in the particle distribution function used in LBM. The LBM code in this study is written in the programs MATLAB and Palabos.<br/><br>
It has here been shown that LBM can be effectively used at a mesoscopic level ranging down to a microscopic level and proven to effectively take care of the interaction between the particles and the walls of the porous media. LBM can also handle the implementation of reaction rates where these can be locally specified or as a general source term. It is concluded that LBM can be valuable for evaluating the risk of local harming spots within the porous structure to reduce these interaction sites. In future studies, the information gained from the microscale modeling can be coupled to a macroscale CFD model and help in development of a smooth structure for interaction of the reforming reaction and the electrochemical reaction rates. This can in turn improve the cell performance.},
  author       = {Paradis, Hedvig and Sundén, Bengt},
  isbn         = {978-0-7918-4479-3},
  keyword      = {Porous media,SOFC,LBM,MATLAB,Palabos,Microscale,Transport processes,Image reconstruction},
  language     = {eng},
  pages        = {163--171},
  series       = {Proceedings of the ASME 10th International Conference Nanochannels, Microchannels and Microchannels},
  title        = {Evaluation of Lattice Boltzmann Method for Reaction-Diffusion Process in a Porous SOFC Anode Microstructure},
  url          = {http://dx.doi.org/10.1115/ICNMM2012-73163},
  year         = {2012},
}