Molecular kinetic modelling of non-equilibrium evaporative flows
文献类型：期刊论文
| 作者 | Li, Shaokang5; Su, Wei3,4; Shan, Baochao5; Li, Zuoxu2; Gibelli, Livio5; Zhang YH(张勇豪)1,2 |
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 2024-09-18 |
| 卷号 | 994页码:18 |
| 关键词 | non-continuum effects condensation/evaporation kinetic theory |
| ISSN号 | 0022-1120 |
| DOI | 10.1017/jfm.2024.605 |
| 通讯作者 | Gibelli, Livio(livio.gibelli@ed.ac.uk) ; Zhang, Yonghao(yonghao.zhang@imech.ac.cn) |
| 英文摘要 | Recent years have seen the emergence of new technologies that exploit nanoscale evaporation, ranging from nanoporous membranes for distillation to evaporative cooling in electronics. Despite the increasing depth of fundamental knowledge, there is still a lack of simulation tools capable of capturing the underlying non-equilibrium liquid-vapour phase changes that are critical to these and other such technologies. This work presents a molecular kinetic theory model capable of describing the entire flow field, i.e. the liquid and vapour phases and their interface, while striking a balance between accuracy and computational efficiency. In particular, unlike previous kinetic models based on the isothermal assumption, the proposed model can capture the temperature variations that occur during the evaporation process, yet does not require the computational resources of more complicated mean-field kinetic approaches. We assess the present kinetic model in three test cases: liquid-vapour equilibrium, evaporation into near-vacuum condition, and evaporation into vapour. The results agree well with benchmark solutions, while reducing the simulation time by almost two orders of magnitude on average in the cases studied. The results therefore suggest that this work is a stepping stone towards the development of an accurate and efficient computational approach to optimising the next generation of nanotechnologies based on nanoscale evaporation. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | LATTICE BOLTZMANN MODELS ; KNUDSEN LAYERS ; MONTE-CARLO ; SIMULATION ; PHASE ; GAS |
| 资助项目 | UK 's Engineering and Physical Sciences Research Council[EP/R041938/2] ; Chinese Scholarship Council |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001314642500001 |
| 资助机构 | UK 's Engineering and Physical Sciences Research Council ; Chinese Scholarship Council |
| 其他责任者 | Gibelli, Livio ; Zhang, Yonghao |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96712]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China 2.Chinese Acad Sci, Inst Mech, Ctr Interdisciplinary Res Fluids, Beijing 100190, Peoples R China; 3.Hong Kong Univ Sci & Technol, Dept Math, Clear Water Bay, Hong Kong, Peoples R China; 4.Hong Kong Univ Sci & Technol, Div Emerging Interdisciplinary Areas, Hong Kong, Peoples R China; 5.Univ Edinburgh, Sch Engn, Edinburgh EH9 3FB, Scotland; |
| 推荐引用方式 GB/T 7714 | Li, Shaokang,Su, Wei,Shan, Baochao,et al. Molecular kinetic modelling of non-equilibrium evaporative flows[J]. JOURNAL OF FLUID MECHANICS,2024,994:18. |
| APA | Li, Shaokang,Su, Wei,Shan, Baochao,Li, Zuoxu,Gibelli, Livio,&张勇豪.(2024).Molecular kinetic modelling of non-equilibrium evaporative flows.JOURNAL OF FLUID MECHANICS,994,18. |
| MLA | Li, Shaokang,et al."Molecular kinetic modelling of non-equilibrium evaporative flows".JOURNAL OF FLUID MECHANICS 994(2024):18. |
入库方式： OAI收割
来源：力学研究所
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