The effect of gravity on R410A condensing flow in horizontal circular tubes
文献类型：期刊论文
| 作者 | Li W; Zhang JZ; Mi PF; Zhao JF(赵建福) ; Tao Z; Childs PRN; Shih TIP; Li, W (reprint author), Zhejiang Univ, Dept Energy Engn, 38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China.
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| 刊名 | NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
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| 出版日期 | 2017 |
| 卷号 | 71期号:3页码:327-340 |
| ISSN号 | 1040-7782 |
| DOI | 10.1080/10407782.2016.1264743 |
| 产权排序 | [Li, Wei] Zhejiang Univ, Dept Energy Engn, 38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China; [Zhang, Jingzhi; Mi, Pengfei; Childs, Peter R. N.] Imperial Coll London, Dyson Sch Design Engn, London, England; [Zhang, Jingzhi] Zhejiang Univ, Coinnovat Ctr Adv Aeroengine, Hangzhou, Zhejiang, Peoples R China; [Zhao, Jianfu] Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing, Peoples R China; [Tao, Zhi] Beijing Univ Aeronaut & Astronaut, Sch Energy & Power Engn, Beijing, Peoples R China; [Shih, Tom I. -P.] Purdue Univ, Sch Aeronaut & Astronaut, W Lafayette, IN 47907 USA |
| 文献子类 | Article |
| 英文摘要 | Heat transfer characteristics of R410A condensation in horizontal tubes with the inner diameter of 3.78 mm under normal and reduced gravity are investigated numerically. The results indicate that the heat transfer coefficients increase with increasing gravitational accelerations at a lower mass flux, whereas their differences under varying gravity are insignificant at a higher mass flux. The liquid film thickness decreases with increasing gravity at the top part of the tube, whereas the average liquid film thickness is nearly the same under different gravity accelerations at the same vapor quality and mass flux. The local heat transfer coefficients increase with increasing gravity at the top of the tube and decrease with increasing gravity at the bottom. The proportion of the thin liquid film region is important for the overall heat transfer coefficients for the condensing flow. A vortex with its core lying at the bottom of the tube is observed under normal gravity because of the combined effect of gravity and the mass sink at the liquid-vapor interface, whereas the stream traces point to the liquid-vapor interfaces under zero gravity. The mass transfer rate under zero gravity is much lower than that of normal gravity. |
| 分类号 | 二类 |
| WOS关键词 | CONDENSATION HEAT-TRANSFER ; FILM CONDENSATION ; CONVECTIVE CONDENSATION ; SURFACE-TENSION ; TRANSFER MODEL ; PRESSURE-DROP ; MICROFIN TUBE ; MICROGRAVITY ; MICROCHANNELS ; INCLINATION |
| WOS研究方向 | Thermodynamics ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000396590600006 |
| 资助机构 | National Science Foundation of Zhejiang Province, China [LZ13E060001] ; National Science Foundation of China [51210011] ; Zhejiang Provincial Public Projects (analysis and test) of Zhejiang Province [2015C37027] |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/72134]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 通讯作者 | Li, W (reprint author), Zhejiang Univ, Dept Energy Engn, 38 Zheda Rd, Hangzhou 310027, Zhejiang, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Li W,Zhang JZ,Mi PF,et al. The effect of gravity on R410A condensing flow in horizontal circular tubes[J]. NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,2017,71(3):327-340. |
| APA | Li W.,Zhang JZ.,Mi PF.,赵建福.,Tao Z.,...&Li, W .(2017).The effect of gravity on R410A condensing flow in horizontal circular tubes.NUMERICAL HEAT TRANSFER PART A-APPLICATIONS,71(3),327-340. |
| MLA | Li W,et al."The effect of gravity on R410A condensing flow in horizontal circular tubes".NUMERICAL HEAT TRANSFER PART A-APPLICATIONS 71.3(2017):327-340. |
入库方式： OAI收割
来源：力学研究所
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