Abstract
Swirling flow phenomena in a model channel of a disk shape planar solid oxide fuel cell (SOFC) with porous wall were experimentally investigated using a laser Doppler velocimetry (LDV). In the case of applying circle involute shape current collectors made of porous metal, a reduction of a velocity close to their surface was reduced. Furthermore, a velocity component normal to the current collector had positive value due to the gas flow permeating porous metal, and discrepancy from the streamline along the involute curve was observed. These characteristics were remarkable with increase in permeability and porosity of the current collectors. This result suggests that an optimum range of permeability and porosity of the current collector exists for favorable flow fields in the disk shape SOFC.
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