Characterization of fluid-mechanic efficiency of porous electrodes using X-ray computed tomography and Lattice-Boltzmann simulations
Övrigt konferensbidrag, 2017
To clarify this issue, real carbon felt electrodes have been reconstructed by means of X-ray computed tomography (CT). In particular, a metrological micro-CT system has been used to obtain accurate three-dimensional reconstructions, which have then been used as input for Lattice-Boltzmann flow simulations coupled with a Lagrangian Particle Tracking algorithm, in order to investigate the dispersion and reaction behaviour of tracers through the medium microstructures, see e.g. Fig.1. For each material, macroscopic dispersion, reaction efficiencies and flow resistance have been evaluated from the underlying microscopic statistics of flow and tracer trajectories.
From these analyses, the overall fluid-mechanic efficiency of each material has been evaluated and compared allowing the identification of the optimal porous microstructure for flow battery applications, which shows the highest dispersion and reaction rate together with the lowest pressure drop.
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[3] Maggiolo D., Picano F. and Guarnieri M., 2016. Physics of Fluids, 28(10), p.102001.
Författare
Dario Maggiolo
Chalmers, Tillämpad mekanik, Strömningslära
Andrea Trovò
Università di Padova
Francesco Picano
Università di Padova
Filippo Zanini
Università di Padova
Simone Carmignato
Università di Padova
Massimo Guarnieri
Università di Padova
Hannover, Germany,
Ämneskategorier
Energiteknik
Annan kemiteknik
Strömningsmekanik och akustik