21014 ディスク型SOFCの流路形状に関する流体力学的検討(流体工学(2),一般講演,学術講演)

概要

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The velocity fields between two parallel disks which simulate the disk-type solid oxide fuel cell (SOFC), were measured by using particle image velocimetry (PIV). The experiments have been performed for two kinds of disk channels to investigate the effects of channel geometries on flow behavior. In the fuel channel with four linear-shape current collectors, a working gas was decelerated along the flow direction and hence optimum flow conditions were restricted. However, by adopting the involute curve as a current collector shape, uniform velocity distributions were realized in the fuel channel except for near its outer rim. On the other hands, in the air channel having four injection holes, non-uniform flow distribution is enlarged with increase of flow rate and local high velocity regions were observed at a high flow rate. We confirmed that the increase of the hole cross section area and the number of injection holes led to the uniform velocity distributions.
社団法人日本機械学会の論文
2008-03-13