Simulation of 3D Porous Media Flows with Application to Polymer Electrolyte Fuel Cells
N. I. Prasianakis 1*, T. Rosen 2, J. Kang 1, J. Eller 3, J. Mantzaras 1, F. N. Buchi 31 Combustion Research Laboratory, Paul Scherrer Institute, Villigen PSI 5232, Switzerland.
2 Combustion Research Laboratory and Electrochemistry Laboratory, Paul Scherrer Institute, Villigen PSI 5232, Switzerland.
3 Electrochemistry Laboratory, Paul Scherrer Institute, Villigen PSI 5232, Switzerland.
Received 31 October 2011; Accepted (in revised version) 31 January 2012
Available online 29 August 2012
A 3D lattice Boltzmann (LB) model with twenty-seven discrete velocities is presented and used for the simulation of three-dimensional porous media flows. Its accuracy in combination with the half-way bounce back boundary condition is assessed. Characteristic properties of the gas diffusion layers that are used in polymer electrolyte fuel cells can be determined with this model. Simulation in samples that have been obtained via X-ray tomographic microscopy, allows to estimate the values of permeability and relative effective diffusivity. Furthermore, the computational LB results are compared with the results of other numerical tools, as well as with experimental values.AMS subject classifications: 65D18, 76G25, 76M28, 76S05
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Key words: Porous media, GDLs, lattice Boltzmann, fuel cells, fluid dynamics.
Email: email@example.com (N. I. Prasianakis), firstname.lastname@example.org (T. Rosen), email@example.com (J. Kang), firstname.lastname@example.org (J. Eller), email@example.com (J. Mantzaras), firstname.lastname@example.org (F. N. Buchi)