A comprehensive CFD model of anode-supported solid oxide fuel cells

Jeon, Dong Hyup

doi:10.1016/j.electacta.2008.11.048

Cited by 86 publications

(35 citation statements)

References 30 publications

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“…This present model predictions gives better agreement with the experimental results than those obtained by Jeon's et al model [36]. The tortuosity value is varied to obtain the best fit between the experimental results and those from the simulation.…”

Section: Numerical Approachsupporting

confidence: 33%

“…Figure 3 compares this model simulation with that simulated by Jeon et al [36] and that obtained from the above experimental data [42] at 1073 K. The parameters used for the model simulation are listed in Table 5. Most of the parameters used in validating the model were obtained from Jung et al [42], other parameters not provided by the experimental report were obtained from litera-…”

Section: Numerical Approachmentioning

confidence: 90%

“…To carry out the validation, experimental data from the paper "Effect of cathode current-collecting layer on unit-cell performance of anode-supported solid oxide fuel cells" by Jung et al [42] and the numerical simulation studies carried out by Jeon [36] titled "A comprehensive CFD model of anode-supported solid oxide fuel cells" is used.…”

Section: Cell Performance Validationmentioning

confidence: 99%

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An Isothermal Study of the Electrochemical Performance of Intermediate Temperature Solid Oxide Fuel Cells

Ighodaro¹,

Scott²,

Lü³

2017

JPEE

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A two-dimensional along the channel micro-scale isothermal model of a SOFC is developed and validated against experimental data and other simulated results from literature. The steady state behaviour of the cell was determined by numerical solution of the combined transport, continuity and kinetic equations. An important characteristic of the model is the consideration of the triple phase boundary as a distinct layer. The model is capable of predicting the cell performance including polarisation behaviour and power output. The model is used to study the effect of the support structure, geometric parameters and the effect of operating conditions on cell performance. Several parametric studies include the effect of operating conditions and geometric parameters on cell performance with a view to optimising the cell. The simulation results showed that the anode supported SOFC displayed the best performance with the activation and ohmic overpotentials being responsible for most of the voltage losses in the cell.

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Section: Numerical Approachsupporting

confidence: 33%

Section: Numerical Approachmentioning

confidence: 90%

Section: Cell Performance Validationmentioning

confidence: 99%

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An Isothermal Study of the Electrochemical Performance of Intermediate Temperature Solid Oxide Fuel Cells

Ighodaro¹,

Scott²,

Lü³

2017

JPEE

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“…The FVM code used in this study is MICROFOAM, which is a suitably modified version of the open-source computational fluid dynamics (CFD) code OpenFOAM ® [62]. The effective transport properties can be exploited in cell-level models of SOFCs to simulate transport in the porous electrodes [63][64][65][66][67][68][69]. In addition, the computational grids developed in this work along with the associated reconstructed microstructures can also be used to perform detailed microscopic simulations of SOFCs [3,20,70].…”

Section: Introductionmentioning

confidence: 99%

Effective transport properties of the porous electrodes in solid oxide fuel cells

Choi

Berson

Pharoah

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part A:

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This article presents a numerical framework for the computation of the effective transport properties of solid oxide fuel cells (SOFCs) porous electrodes from three-dimensional (3D) constructions of the microstructure. Realistic models of the 3D microstructure of porous electrodes are first constructed from measured parameters such as porosity and particle size distribution. Then each phase in the model geometries is tessellated with a computational grid. Three different types of grids are considered: Cartesian, octree, and body-fitted/cut-cell with successive levels of surface refinement. Finally, a finite volume method is used to compute the effective transport properties in the three phases (pore, electron, and ion) of the electrode. To validate the numerical approach, results obtained with the finite volume method are compared to those calculated with a random walk simulation for the case of a body-centred cubic lattice of spheres. Then, the influence of the sample size is investigated for random geometries with monosized particle distributions. Finally, effective transport properties are calculated for model geometries with polydisperse particle size distributions similar to those observed in actual SOFC electrodes.

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“…Among the papers reviewed by the authors, only Jeon (2009), Nam and Jeon (2006) and Tseronis et al (2008) use a DGM and allow for a variable pressure in the porous medium. Tseronis' model assumes a constant parabolic profile for velocity and constant pressure in the channel, and does not consider velocity-pressure coupling between the channel and the porous medium; Jeon (2009) presents the implementation in the COMSOL code of a 2-D model for two-component mixtures.…”

Section: Article In Pressmentioning

confidence: 99%