Two-Phase Flow In Anode Flow Field Of A Small Direct Methanol Fuel Cell In Different Gravities
文献类型：期刊论文
| 作者 | Guo H(郭航) ; Wu F(吴峰); Ye F(叶芳); Zhao JF(赵建福); Wan SX(万士昕); Lu CP; Ma CF; Guo H
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| 刊名 | Science in China Series E-Technological Sciences
 |
| 出版日期 | 2009 |
| 卷号 | 52期号:6页码:1576-1582 |
| 通讯作者邮箱 | hangguo@sohu.com |
| 关键词 | Direct Methanol Fuel Cells,Microgravity, Two-phase flow, Visualization, Bubble behavior |
| ISSN号 | 1006-9321 |
| 通讯作者 | Guo H |
| 中文摘要 | An in-situ visualization of two-phase flow inside anode flow bed of a small liquid fed direct methanol fuel cells in normal and reduced gravity has been conducted in a drop tower. The anode flow bed consists of 11 parallel straight channels. The length, width and depth of single channel, which had rectangular cross section, are 48.0, 2.5 and 2.0 mm, respectively. The rib width was 2.0 mm. The experimental results indicated that when the fuel cell orientation is vertical, two-phase flow pattern in anode channels can evolve from bubbly flow in normal gravity into slug flow in microgravity. The size of bubbles in the reduced gravity is also bigger. In microgravity, the bubbles rising speed in vertical channels is obviously slower than that in normal gravity. When the fuel cell orientation is horizontal, the slug flow in the reduced gravity has almost the same characteristic with that in normal gravity. It implies that the effect of gravity on two-phase flow is small and the bubbles removal is governed by viscous drag. When the gas slugs or gas columns occupy channels, the performance of liquid fed direct methanol fuel cells is failing rapidly. It infers that in long-term microgravity, flow bed and operating condition should be optimized to avoid concentration polarization of fuel cells. |
| 学科主题 | 微重力流体力学 |
| 类目[WOS] | Engineering, Multidisciplinary ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Engineering ; Materials Science |
| 关键词[WOS] | AEROSPACE APPLICATIONS ; CLOSED ENVIRONMENT ; GAS EVOLUTION ; PERFORMANCE ; PATTERNS ; SYSTEM ; DMFC ; BEHAVIOR ; BUBBLES ; DESIGN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000266094600013 |
| 公开日期 | 2009-08-03 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/26700]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 通讯作者 | Guo H |
| 推荐引用方式 GB/T 7714 | Guo H,Wu F,Ye F,et al. Two-Phase Flow In Anode Flow Field Of A Small Direct Methanol Fuel Cell In Different Gravities[J]. Science in China Series E-Technological Sciences,2009,52(6):1576-1582. |
| APA | Guo H.,Wu F.,Ye F.,Zhao JF.,Wan SX.,...&Guo H.(2009).Two-Phase Flow In Anode Flow Field Of A Small Direct Methanol Fuel Cell In Different Gravities.Science in China Series E-Technological Sciences,52(6),1576-1582. |
| MLA | Guo H,et al."Two-Phase Flow In Anode Flow Field Of A Small Direct Methanol Fuel Cell In Different Gravities".Science in China Series E-Technological Sciences 52.6(2009):1576-1582. |
入库方式： OAI收割
来源：力学研究所
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