Two-phase flow behavior in a mini channel is studied by both experimental and numerical methods. Various surface conditions are considered to capture the fundamental characteristics of water droplet behavior in a PEMFC gas channel. In the considered rectangular channel with 1 mm height, critical velocity for annular flow type is measured as 1∼2 m/s of superficial air velocity. Two-phase flow pattern shows some uncertainty near transition zone with aluminum surface. With carbon paper GDL, two-phase flow pattern is stabilized. Measured two-phase pressure drop data explains the relation between two-phase flow pattern and two-phase pressure drop. Numerical simulation using VOF technique successfully mimicked the development of water droplet and corner flow as well as formation of a slug. It also explains the possibility of random slug formation with aluminum surface and stabilized two-phase flow pattern with carbon paper GDLs.
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ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability
August 7–10, 2011
Washington, DC, USA
Conference Sponsors:
- Advanced Energy Systems Division
ISBN:
978-0-7918-5469-3
PROCEEDINGS PAPER
Two-Phase Flow in a Gas Flow Channel of Polymer Electrolyte Fuel Cells
Sung Chan Cho,
Sung Chan Cho
University of California, Irvine, CA
Search for other works by this author on:
Yun Wang
Yun Wang
University of California, Irvine, CA
Search for other works by this author on:
Sung Chan Cho
University of California, Irvine, CA
Yun Wang
University of California, Irvine, CA
Paper No:
FuelCell2011-54118, pp. 575-581; 7 pages
Published Online:
March 22, 2012
Citation
Cho, SC, & Wang, Y. "Two-Phase Flow in a Gas Flow Channel of Polymer Electrolyte Fuel Cells." Proceedings of the ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability. ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Washington, DC, USA. August 7–10, 2011. pp. 575-581. ASME. https://doi.org/10.1115/FuelCell2011-54118
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