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Lattice Boltzmann Modeling of Advection-Diffusion Transport with Electrochemical Reactions

Paradis, Hedvig LU ; Andersson, Martin LU and Sundén, Bengt LU (2013) ASME 10th International Fuel Cell Science, Engineering and Technology Conference In Proceedings of the ASME 10th International Fuel Cell Science, Engineering and Technology Conference
Abstract
Lattice Boltzmann method (LBM) is a method that can be used to capture the detailed activities of the transport processes at microscale. Here LBM is used to model the porous anode for an anode-supported Solid Oxide Fuel Cell (SOFC). The purpose of this study is to investigate the effects of electrochemical reactions on the transport processes by a 3D model at microscale. A porous 3D modeling domain is created with randomly placed spheres to resemble the part of the anode structure close to the electrolyte. The 3D model is simulated with parallel computing in Python using Palabos and also MATLAB to capture the active microscopic catalytic effects on the heat and mass transport. A multicomponent reaction-advection-diffusion transport for... (More)
Lattice Boltzmann method (LBM) is a method that can be used to capture the detailed activities of the transport processes at microscale. Here LBM is used to model the porous anode for an anode-supported Solid Oxide Fuel Cell (SOFC). The purpose of this study is to investigate the effects of electrochemical reactions on the transport processes by a 3D model at microscale. A porous 3D modeling domain is created with randomly placed spheres to resemble the part of the anode structure close to the electrolyte. The 3D model is simulated with parallel computing in Python using Palabos and also MATLAB to capture the active microscopic catalytic effects on the heat and mass transport. A multicomponent reaction-advection-diffusion transport for three components (H2, H2O and O2-) is analyzed with electrochemical reactions and particle collisions. This combined with the heat, momentum and charge transport in the 3D model.

It is here been shown that LBM can be used to evaluate the microscale effect of electrochemical reactions on the transport processes and some potential risk of hot spots to reduce harming interaction sites. The electrochemical potential is gradually increased along the flow direction as the species come in contact with each other. There is a potential risk for a hot spot when the active interacting species reach a catalytic layer and the smooth flow pattern is disturbed. Improving the flow structure by the catalytic interface can increase interaction of the reforming reactions and the electrochemical reactions, which in turn can improve the cell performance. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Potential, Fluid flow, Mass diffusion, Heat transport, LBM, Microscale, SOFC, Porous media
in
Proceedings of the ASME 10th International Fuel Cell Science, Engineering and Technology Conference
pages
11 pages
conference name
ASME 10th International Fuel Cell Science, Engineering and Technology Conference
external identifiers
  • Scopus:84892691952
language
English
LU publication?
yes
id
e59b4b50-86d2-4676-94d3-9a78d1ac4005 (old id 4007026)
date added to LUP
2013-09-06 13:32:14
date last changed
2016-10-13 04:53:55
@misc{e59b4b50-86d2-4676-94d3-9a78d1ac4005,
  abstract     = {Lattice Boltzmann method (LBM) is a method that can be used to capture the detailed activities of the transport processes at microscale. Here LBM is used to model the porous anode for an anode-supported Solid Oxide Fuel Cell (SOFC). The purpose of this study is to investigate the effects of electrochemical reactions on the transport processes by a 3D model at microscale. A porous 3D modeling domain is created with randomly placed spheres to resemble the part of the anode structure close to the electrolyte. The 3D model is simulated with parallel computing in Python using Palabos and also MATLAB to capture the active microscopic catalytic effects on the heat and mass transport. A multicomponent reaction-advection-diffusion transport for three components (H2, H2O and O2-) is analyzed with electrochemical reactions and particle collisions. This combined with the heat, momentum and charge transport in the 3D model.<br/><br>
It is here been shown that LBM can be used to evaluate the microscale effect of electrochemical reactions on the transport processes and some potential risk of hot spots to reduce harming interaction sites. The electrochemical potential is gradually increased along the flow direction as the species come in contact with each other. There is a potential risk for a hot spot when the active interacting species reach a catalytic layer and the smooth flow pattern is disturbed. Improving the flow structure by the catalytic interface can increase interaction of the reforming reactions and the electrochemical reactions, which in turn can improve the cell performance.},
  author       = {Paradis, Hedvig and Andersson, Martin and Sundén, Bengt},
  keyword      = {Potential,Fluid flow,Mass diffusion,Heat transport,LBM,Microscale,SOFC,Porous media},
  language     = {eng},
  pages        = {11},
  series       = {Proceedings of the ASME 10th International Fuel Cell Science, Engineering and Technology Conference},
  title        = {Lattice Boltzmann Modeling of Advection-Diffusion Transport with Electrochemical Reactions},
  year         = {2013},
}