کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9760115 | 1498040 | 2005 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Water behavior in serpentine micro-channel for proton exchange membrane fuel cell cathode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The behavior of water in the air-water flow inside a serpentine channel for a proton exchange membrane (PEM) fuel cell was investigated using the FLUENT software package. The volume-of-fluid (VOF) model was adopted to track the dynamic air-water interface. Five cases with varying initial water phase distribution corresponding to different fuel cell operating conditions were numerically simulated to obtain a better understanding of water behavior inside a serpentine micro-channel. Results show that the bend area of a serpentine flow channel has significant effects on the flow field, which in turn affects the air-water flow and water liquid distribution inside the channel or along the interior channel surfaces. The simulation results also indicate that water flooding could occur in the “after-bend” section of a micro-channel. For the case with larger amount of water in the two-phase flow, the simulation shows that the “after-bend” water distribution might block the reactant supply to reaction sites and, in some extreme situations, might block the reactant transport inside the flow channel, thus decreasing fuel cell performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 152, 1 December 2005, Pages 131-145
Journal: Journal of Power Sources - Volume 152, 1 December 2005, Pages 131-145
نویسندگان
Peng Quan, Biao Zhou, Andrzej Sobiesiak, Zhongsheng Liu,