Abstract
In the context of attempts to improve the performance of solid oxide fuel cell (SOFC), we investigate whether -and to which degree - pulsating flow in the cathode channel affects the performance of the fuel cell. In this study, a two-dimensional Lattice Boltzmann, non-isothermal model of planar SOFC is developed for simulating multicomponent gas transport in the channels and porous electrodes and an electrochemical model is established to study the SOFC performance. After model validation, our study focused on the effects of pulsating air flow on the distribution of temperature and oxygen and the cell performance. The results prove that a pulsating flow enhances the convective species transport to the reaction sites and consequently increases cell performance. The effects of pulsation frequency and amplitude on cell performance are also investigated. The effect of pulsation frequency is marginally small, while the pulsation amplitude increase improves the cell performance.
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