A DEM-based heat transfer model for the evaluation of effective thermal conductivity of packed beds filled with stagnant fluid: Thermal contact theory and numerical simulation | |
Chen, Lei1,2; Wang, Cong2,3; Moscardini, Marigrazia1; Kamlah, Marc1; Liu, Songlin2 | |
刊名 | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER |
2019-04-01 | |
卷号 | 132期号:无页码:331-346 |
关键词 | Fluid-filled packed bed Effective thermal conductivity Discrete element method Thermal contact theory Radical Voronoi tessellation |
ISSN号 | 0017-9310 |
DOI | 10.1016/j.ijheatmasstransfer.2018.12.005 |
英文摘要 | The Effective thermal conductivity (keg) is one of the key thermal properties for packed beds in the presence of a stagnant fluid. In this study, a thermal discrete element model (DEM) based on the original Cheng-Yu-Zulli analytical model for mono-sized packed beds has been improved and implemented especially for mixed beds of different particle sizes or materials. In order to perform the DEM simulation for packed beds, a thermal contact theory considering three heat transfer mechanisms (solid contact conduction, solid-fluid-solid conduction and radiation) was derived and applied in the network of Voronoi cells obtained by radical Voronoi tessellation of the relevant beds. The numerical model was validated through a comparison with experimental results already reported in literature and a good prediction for the effective thermal conductivity was obtained for both mono-sized and multi-sized packed beds in a wide range of solid-to-fluid conductivity ratio. The model also showed a good performance to study the heat flow distribution as well as the coupled thermo-mechanical behavior of packed beds. (C) 2018 Elsevier Ltd. All rights reserved. |
资助项目 | Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Chinese National Natural Science Foundation[11775256] |
WOS关键词 | PEBBLE BED ; BREEDER BLANKET ; ELEMENT METHOD ; SOLID BREEDER ; TEMPERATURE |
WOS研究方向 | Thermodynamics ; Engineering ; Mechanics |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:000458712300031 |
资助机构 | Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Sino-Germany (CSC-DAAD) Postdoc Scholarship ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation ; Chinese National Natural Science Foundation |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/42123] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Liu, Songlin |
作者单位 | 1.KIT, IAM, WBM, D-76344 Eggenstein Leopoldshafen, Germany 2.Chinese Acad Sci ASIPP, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 3.Univ Sci & Technol China, Hefei 230027, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Lei,Wang, Cong,Moscardini, Marigrazia,et al. A DEM-based heat transfer model for the evaluation of effective thermal conductivity of packed beds filled with stagnant fluid: Thermal contact theory and numerical simulation[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2019,132(无):331-346. |
APA | Chen, Lei,Wang, Cong,Moscardini, Marigrazia,Kamlah, Marc,&Liu, Songlin.(2019).A DEM-based heat transfer model for the evaluation of effective thermal conductivity of packed beds filled with stagnant fluid: Thermal contact theory and numerical simulation.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,132(无),331-346. |
MLA | Chen, Lei,et al."A DEM-based heat transfer model for the evaluation of effective thermal conductivity of packed beds filled with stagnant fluid: Thermal contact theory and numerical simulation".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 132.无(2019):331-346. |
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