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Modeling of a Gradient Porosity SOFC Anode using the Lattice Boltzmann Method

Espinoza-Andaluz, Mayken LU ; Andersson, Martin LU and Sundén, Bengt LU (2017) In Energy Procedia 105. p.1332-1338
Abstract

The solid oxide fuel cell (SOFC) is an electrochemical device that converts the chemical energy present in reactant fuels into electrical energy and heat. Such conversion is given by the electrochemical reactions that occur inside the fuel cells when the reactant gases reach the so-called Three-phase Boundary (TPB). However, before the reactant gases can reach the TPBs, they have to pass through an anisotropic layered material in which the fluid behavior is not easy to explain. The purpose of this paper is to obtain a detailed behavior of the fluid flow through a modeled SOFC anode with gradient porosity using the Lattice Boltzmann method (LBM). Three different modeled SOFC anodes are analyzed keeping the porosity as a constant value,... (More)

The solid oxide fuel cell (SOFC) is an electrochemical device that converts the chemical energy present in reactant fuels into electrical energy and heat. Such conversion is given by the electrochemical reactions that occur inside the fuel cells when the reactant gases reach the so-called Three-phase Boundary (TPB). However, before the reactant gases can reach the TPBs, they have to pass through an anisotropic layered material in which the fluid behavior is not easy to explain. The purpose of this paper is to obtain a detailed behavior of the fluid flow through a modeled SOFC anode with gradient porosity using the Lattice Boltzmann method (LBM). Three different modeled SOFC anodes are analyzed keeping the porosity as a constant value, but varying the void space distribution in the flow direction. Results show that the an decreasing porosity in the flow direction can offer more possibilities for reactant gases to get easily the TPB; and therefore, the reaction rate during the electrochemical reactions can be increased.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Lattice Boltzmann method, porosity, solid oxide fuel cell, three-phase boundary
in
Energy Procedia
volume
105
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:85020747810
ISSN
1876-6102
DOI
10.1016/j.egypro.2017.03.484
language
English
LU publication?
yes
id
5e81c725-c949-4f4b-a7c3-4a39f9a42522
date added to LUP
2017-07-05 08:34:09
date last changed
2017-07-05 08:34:09
@article{5e81c725-c949-4f4b-a7c3-4a39f9a42522,
  abstract     = {<p>The solid oxide fuel cell (SOFC) is an electrochemical device that converts the chemical energy present in reactant fuels into electrical energy and heat. Such conversion is given by the electrochemical reactions that occur inside the fuel cells when the reactant gases reach the so-called Three-phase Boundary (TPB). However, before the reactant gases can reach the TPBs, they have to pass through an anisotropic layered material in which the fluid behavior is not easy to explain. The purpose of this paper is to obtain a detailed behavior of the fluid flow through a modeled SOFC anode with gradient porosity using the Lattice Boltzmann method (LBM). Three different modeled SOFC anodes are analyzed keeping the porosity as a constant value, but varying the void space distribution in the flow direction. Results show that the an decreasing porosity in the flow direction can offer more possibilities for reactant gases to get easily the TPB; and therefore, the reaction rate during the electrochemical reactions can be increased.</p>},
  author       = {Espinoza-Andaluz, Mayken and Andersson, Martin and Sundén, Bengt},
  issn         = {1876-6102},
  keyword      = {Lattice Boltzmann method,porosity,solid oxide fuel cell,three-phase boundary},
  language     = {eng},
  pages        = {1332--1338},
  publisher    = {Elsevier},
  series       = {Energy Procedia},
  title        = {Modeling of a Gradient Porosity SOFC Anode using the Lattice Boltzmann Method},
  url          = {http://dx.doi.org/10.1016/j.egypro.2017.03.484},
  volume       = {105},
  year         = {2017},
}