J061041 燃料電池内流路モデル流れのPIV計測(〔J061-04〕燃料電池・二次電池におけるナノ・マイクロ現象とマクロ性能(4):PEFC内輸送現象)

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  • J061041 PIV Experiments of Model Flow Passages in a Fuel Cell

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To understand the flow physics in a serpentine passage over a porous wall, which mimics the flow channel in a fuel cell, PIV measurements are carried out. Two kinds of porous media (case #06, #20) which have the same porosity but different permeability are used. Flows at Re_b=600-2700 are considered. The measured conditions correspond to an actual operating flow rate and an extreme high flow rate conditions. It is found that the flow rates in the porous media (leakage flow rates) and the flow motions going in and out of the porous media(cross-leakage flow) increase as the permeability increases. In the bend region, turbulence is enhanced by the bend structure, and in the flow after the bend region, it is also enhanced as the permeability increases. Also at Re_b=600, longer turbulent flow regions are retained near the bend as the permeability increases because of the presence of the cross-leakage flow.

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  • 年次大会

    年次大会 2013 (0), _J061041-1-_J061041-5, 2013

    一般社団法人 日本機械学会

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