Heat transfer characteristics of a binary thin liquid film in a microchannel with constant heat flux boundary condition
文献类型：期刊论文
| 作者 | Zhou, Leping1; Zhou, Shengni1,2; Du, Xiaoze1; Yang, Yongping1 |
| 刊名 | INTERNATIONAL JOURNAL OF THERMAL SCIENCES
 |
| 出版日期 | 2018-12-01 |
| 卷号 | 134页码:612-621 |
| 关键词 | Thin film Binary fluid Temperature Channel size Non-condensable gas |
| ISSN号 | 1290-0729 |
| DOI | 10.1016/j.ijthermalsci.2018.08.043 |
| 通讯作者 | Zhou, Leping(lpzhou@ncepu.edu.cn) |
| 英文摘要 | Thin film evaporation of multi-component fluids in microchannels is important in many industrial applications, which requires comprehensive modeling of the transport mechanisms in the liquid, gas and solid phases. This paper presents a numerical study on the heat transfer characteristics of a binary thin liquid film in a micro channel with constant heat flux boundary condition, using the enhanced Young-Laplace equation that considers the effect of disjoining pressure for binary fluids. Effects of temperature, microchannel size, and non-condensable gas on the binary thin film heat transfer was analyzed. The results show that the thin film contribution to the total heat transfer rate reduces when the initial temperature increases, but the difference between them decreases as the microchannel size reduces. Size effect can be prominent when the characteristic microchannel size is smaller than 10 gm. When the microchannel size decreases, the cumulative heat transfer rate across the interface of the solution decreases, while the thin film contribution to the total heat transfer rate increases obviously. The non-condensable gas deteriorates the cumulative heat transfer rate, but the deterioration reduces under the high temperature condition as compared to that under the low temperature condition. Comparison of the results shows that the temperature and microchannel size have the greatest effect on the heat transfer followed by the non-condensable gas. This can be efficiently utilized for heat transfer enhancement and thermal design in applications involving phase-change heat transfer of multi-component fluids in microchannels. |
| WOS关键词 | EVAPORATING MENISCUS ; DISJOINING PRESSURE ; CONTACT LINE ; THERMOPHYSICAL PROPERTIES ; EXTENDED MENISCUS ; THEORETICAL-MODEL ; INTERFACIAL SLIP ; MASS-TRANSFER ; TRANSPORT ; REGION |
| 资助项目 | National Natural Science Foundation of China[91634115] |
| WOS研究方向 | Thermodynamics ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000447572700033 |
| 出版者 | ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.giec.ac.cn/handle/344007/24021]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Zhou, Leping |
| 作者单位 | 1.North China Elect Power Univ, Minist Educ, Sch Energy Power & Mech Engn, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510070, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Leping,Zhou, Shengni,Du, Xiaoze,et al. Heat transfer characteristics of a binary thin liquid film in a microchannel with constant heat flux boundary condition[J]. INTERNATIONAL JOURNAL OF THERMAL SCIENCES,2018,134:612-621. |
| APA | Zhou, Leping,Zhou, Shengni,Du, Xiaoze,&Yang, Yongping.(2018).Heat transfer characteristics of a binary thin liquid film in a microchannel with constant heat flux boundary condition.INTERNATIONAL JOURNAL OF THERMAL SCIENCES,134,612-621. |
| MLA | Zhou, Leping,et al."Heat transfer characteristics of a binary thin liquid film in a microchannel with constant heat flux boundary condition".INTERNATIONAL JOURNAL OF THERMAL SCIENCES 134(2018):612-621. |
入库方式： OAI收割
来源：广州能源研究所
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