Publication: Effective transport properties
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Identifiers
ISSN: 2195-1284
ISSN: 2195-1292 (online)
ISBN: 978-3-030-92177-4
ISBN: 978-3-030-92178-1 (online)
UXXI: CO/0000011551
Publication date
2022-05-07
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Springer Nature Switzerland AG.
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Abstract
Porous media are an integral part of electrochemical energy conversion and storage devices, including fuel cells, electrolyzers, redox flow batteries and lithium-ion batteries, among others. The calculation of effective transport properties is required for designing more efficient components and for closing the formulation of macroscopic continuum models at the cell/stack level. In this chapter, OpenFOAM is used to determine the effective transport properties of virtually-generated fibrous gas diffusion layers. The analysis focuses on effective properties that rely on the fluid phase, diffusivity and permeability, which are determined by solving Laplace and Navier-Stokes equations at the pore scale, respectively. The model implementation (geometry generation, meshing, solver settings and postprocessing) is described, accompanied by a discussion of the main results. The dependence of orthotropic effective transport properties on porosity is examined and compared with traditional correlations.
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Keywords
Electrochemical energy conversion, Storage, Transport properties, OpenFOAM
Bibliographic citation
Garcia Salaberri, Pablo Angel (2022). Effective transport properties. Electrochemical cell calculations with OpenFOAM. Lecture notes in energy, vol. 42. Cham: Springer Nature Switzerland AG Pp. 151-168