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Open AccessArticle

Effects of Bridge-Shaped Microchannel Geometry on the Performance of a Micro Laminar Flow Fuel Cell

Department of Mechanical Engineering, Inha University, Incheon 22212, Korea
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Author to whom correspondence should be addressed.
Micromachines 2019, 10(12), 822; https://doi.org/10.3390/mi10120822
Received: 2 November 2019 / Revised: 21 November 2019 / Accepted: 25 November 2019 / Published: 27 November 2019
(This article belongs to the Special Issue Optimization of Microfluidic Devices)
A laminar flow micro fuel cell comprising of bridge-shaped microchannel is investigated to find out the effects of the cross-section shape of the microchannel on the performance. A parametric study is performed by varying the heights and widths of the channel and bridge shape. Nine different microchannel cross-section shapes are evaluated to find effective microchannel cross-sections by combining three bridge shapes with three channel shapes. A three-dimensional fully coupled numerical model is used to calculate the fuel cell’s performance. Navier-Stokes, convection and diffusion, and Butler-Volmer equations are implemented using the numerical model. A narrow channel with a wide bridge shape shows the best performance among the tested nine cross-sectional shapes, which is increased by about 78% compared to the square channel with the square bridge shape. View Full-Text
Keywords: laminar flow fuel cell; numerical model; bridge-shaped microchannel; power density; ohmic losses laminar flow fuel cell; numerical model; bridge-shaped microchannel; power density; ohmic losses
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Tanveer, M.; Kim, K.-Y. Effects of Bridge-Shaped Microchannel Geometry on the Performance of a Micro Laminar Flow Fuel Cell. Micromachines 2019, 10, 822.

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