Effects of Bridge-Shaped Microchannel Geometry on the Performance of a Micro Laminar Flow Fuel Cell
Muhammad Tanveer, Kwang-Yong Kim
AI summary
65% confidenceA parametric study of bridge-shaped microchannel geometry in a micro laminar flow fuel cell shows that a narrow channel with a wide bridge shape has the best performance, increasing by 78% compared to a square channel with a square bridge shape.
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Abstract
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.
Key findings
- Narrow channel with wide bridge shape has best performance
- 78% increase in performance compared to square channel with square bridge shape
- Nine different microchannel cross-section shapes were evaluated
Keywords
Identifiers
- Journal
- Micromachines
- Year
- 2019