| Subcooled pool boiling on thin wire in microgravity | |
Zhao JF(赵建福) ; Wan SX(万士昕); Liu G(刘刚); Yan N(闫娜); Hu WR(胡文瑞)
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| Source Publication | Acta Astronautica
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| 2009 | |
| Volume | 64Issue:1Pages:188-194 |
| ISSN | 0094-5765 |
| Abstract | A new set of experimental data of subcooled pool boiling on a thin wire in rnicrogravity aboard the 22nd Chinese recoverable satellite is reported in the present paper. The temperature-control led heating method is used. The results of the experiments in normal gravity before and after the flight experiment are also presented, and compared with those in microgravity. The working fluid is degassed R113 at 0.1 MPa and subcooled by 26 degrees C nominally. A thin platinum wire of 60 mu m in diameter and 30 mm in length is simultaneously used as heater and thermometer. It is found that the heat transfer of nucleate pool boiling is slightly enhanced in microgravity comparing with those in normal gravity. It is also found that the correlation of Lienhard and Dhir can predict the CHF with good agreement, although the range of the dimensionless radius is extended by three or more decades above the originally set limit. Three critical bubble diameters are observed in microgravity, which divide the observed vapor bubbles into four regimes with different sizes. Considering the Marangoni effect, a qualitative model is proposed to reveal the mechanism underlying the bubble departure processes, and a quantitative agreement can also be acquired. |
| Keyword | Nucleate Pool Boiling Microgravity Subcooling Bubble Departure Diameter Heat-transfer Bubble Departure Dynamics Gravity |
| Subject Area | 微重力流体力学 |
| DOI | 10.1016/j.actaastro.2008.07.004 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000261931000010 |
| WOS Keyword | HEAT-TRANSFER ; BUBBLE DEPARTURE ; DYNAMICS ; GRAVITY |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Aerospace |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/33010 |
| Collection | 微重力重点实验室 |
| Corresponding Author | Zhao JF(赵建福) |
| Recommended Citation GB/T 7714 | Zhao JF,Wan SX,Liu G,et al. Subcooled pool boiling on thin wire in microgravity[J]. Acta Astronautica,2009,64,1,:188-194. |
| APA | 赵建福,万士昕,刘刚,闫娜,&胡文瑞.(2009).Subcooled pool boiling on thin wire in microgravity.Acta Astronautica,64(1),188-194. |
| MLA | 赵建福,et al."Subcooled pool boiling on thin wire in microgravity".Acta Astronautica 64.1(2009):188-194. |
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