Numerical simulation of nucleate pool boiling under high pressure using an initial micro-layer thickness model
文献类型：期刊论文
| 作者 | Qiu, Ning2 ; Xuan, Yimin1,2; Li, Jiangang3; Li, Qiang2
|
| 刊名 | CASE STUDIES IN THERMAL ENGINEERING
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 39 |
| 关键词 | Nucleate pool boiling Initial micro-layer thickness High pressure Multi-bubble marking Bubble dynamics |
| ISSN号 | 2214-157X |
| DOI | 10.1016/j.csite.2022.102460 |
| 通讯作者 | Xuan, Yimin(ymxuan@mail.njust.edu.cn) |
| 英文摘要 | Micro-layer evaporation is one of the main phase change mechanisms in nucleate pool boiling. However, the influence of pressure on micro-layer evaporation remains unclarified. The objective of this study is to establish an approach to calculate micro-layer evaporation at high pressure. Here, an analytical solution of the governing equations is applied to derive a semi-empirical correlation for the initial micro-layer thickness delta(0). After the calibration with measurement under atmospheric pressure, delta(0) becomes a function of fluid properties. A nucleation sites tracking method is then implanted in the micro-layer evaporation system for multi-bubble cases. In this study, two single bubble growing cases are employed to validate our initial micro-layer thickness model at high pressure (1.91 MPa, 4.47 MPa). The simulated bubble radius profiles show similar trends with experimental data. Furthermore, the entire multi-bubble evaporation system is also validated against a pool boiling experiment at high pressure (0.51 MPa). The simulated wall superheat is consistent with reported data, with the minimum deviation of about 20%. The contribution of evaporation during nucleate boiling from both the macro and micro region is demonstrated at various operating conditions. Micro-layer supplies about 70% vapor in nucleate pool boiling at 0.51 MPa. |
| WOS关键词 | HEAT-TRANSFER CHARACTERISTICS ; INTERFACE TRACKING METHOD ; BUBBLE-GROWTH RATES ; SITE DENSITY ; WATER ; EVAPORATION ; DYNAMICS ; SURFACE ; VOLUME ; MECHANISMS |
| 资助项目 | National MCF Energy RD Program[2018YFE0312300] |
| WOS研究方向 | Thermodynamics |
| 语种 | 英语 |
| WOS记录号 | WOS:000889147700004 |
| 出版者 | ELSEVIER |
| 资助机构 | National MCF Energy RD Program |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/131706]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Xuan, Yimin |
| 作者单位 | 1.Nanjing Univ Aeronaut & Astronaut, Coll Energy & Power Engn, Nanjing 210016, Peoples R China 2.Nanjing Univ Sci Technol, Sch Energy & Power Engn, MIIT Key Lab Thermal Control Elect Equipment, Nanjing 210094, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Ning,Xuan, Yimin,Li, Jiangang,et al. Numerical simulation of nucleate pool boiling under high pressure using an initial micro-layer thickness model[J]. CASE STUDIES IN THERMAL ENGINEERING,2022,39. |
| APA | Qiu, Ning,Xuan, Yimin,Li, Jiangang,&Li, Qiang.(2022).Numerical simulation of nucleate pool boiling under high pressure using an initial micro-layer thickness model.CASE STUDIES IN THERMAL ENGINEERING,39. |
| MLA | Qiu, Ning,et al."Numerical simulation of nucleate pool boiling under high pressure using an initial micro-layer thickness model".CASE STUDIES IN THERMAL ENGINEERING 39(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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