3D analysis, modeling and simulation of transport processes in compressed fibrous microstructures, using the Lattice Boltzmann method

被引：67

作者：

Froning, Dieter ^{[1
]}

Brinkmann, Jan ^{[1
]}

Reimer, Uwe ^{[1
]}

Schmidt, Volker ^{[2
]}

Lehnert, Werner ^{[1
,3
]}

Stolten, Detlef ^{[1
,4
]}

机构：

[1] Forschungszentrum Julich, Inst Energy & Climate Res, Electrochem Proc Engn IEK 3, D-52425 Julich, Germany

[2] Univ Ulm, Inst Stochast, D-89069 Ulm, Germany

[3] Rhein Westfal TH Aachen, Aachen, Germany

[4] Rhein Westfal TH Aachen, Chair Fuel Cells, Aachen, Germany

来源：

ELECTROCHIMICA ACTA | 2013年 / 110卷

关键词：

Paper-type GDL; Compression; Stochastic modeling; Lattice Boltzmann; Kozeny-Carman; GAS-DIFFUSION LAYERS; MEMBRANE FUEL-CELL; LIQUID WATER TRANSPORT; CARBON PAPER; PERMEABILITY; FLOW; SATURATION; PRESSURE; BEHAVIOR; MEDIA;

D O I：

10.1016/j.electacta.2013.04.071

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this paper we combine a stochastic 3D microstructure model of a fiber based gas diffusion layer of polymer electrolyte fuel cells with a Lattice Boltzmann model for fluid transport. We focus on a simple approach of compressing the planar oriented virtual geometry of paper-type gas diffusion layer from Toray. Material parameters - permeability and tortuosity - are calculated from simulation of one phase, one component gas flow in stochastic geometries. We analyze the statistical spread of simulation results on ensembles of the virtual geometry, both uncompressed and compressed. The influence of the compression is discussed with regard to the Kozeny-Carman equation. The effective transport properties calculated from transport simulations in compressed gas diffusion layers agree well with a trend based on the Kozeny-Carman equation. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：325 / 334

页数：10

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