| Two-Phase Flow In Anode Flow Field Of A Small Direct Methanol Fuel Cell In Different Gravities | |
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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| Source Publication | Science in China Series E-Technological Sciences
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| 2009 | |
| Volume | 52Issue:6Pages:1576-1582 |
| ISSN | 1006-9321 |
| Abstract | 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. |
| Keyword | Direct Methanol Fuel Cells Microgravity Two-phase Flow Visualization Bubble Behavior |
| Subject Area | 微重力流体力学 |
| DOI | 10.1007/s11431-009-0179-0 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000266094600013 |
| WOS Keyword | AEROSPACE APPLICATIONS ; CLOSED ENVIRONMENT ; GAS EVOLUTION ; PERFORMANCE ; PATTERNS ; SYSTEM ; DMFC ; BEHAVIOR ; BUBBLES ; DESIGN |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Multidisciplinary ; Materials Science, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26700 |
| Collection | 微重力重点实验室 |
| Corresponding Author | Guo H |
| Recommended Citation 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. |
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| Jp022.pdf（1604KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-ND | View Download | |
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