Study of heat transfer by using DEM-CFD method in a randomly packed pebble-bed reactor
文献类型：期刊论文
| 作者 | Niu, Q; Wang, NX |
| 刊名 | NUCLEAR SCIENCE AND TECHNIQUES
 |
| 出版日期 | 2019 |
| 卷号 | 30期号:2页码:— |
| 关键词 | THERMAL-CONDUCTIVITY MODEL FLOW CONTACT VALIDATION SIMULATION CONVECTION GAS |
| ISSN号 | 1001-8042 |
| DOI | 10.1007/s41365-019-0556-8 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The pebble-bed reactor is one of the most promising designs for the nuclear energy industry. In this paper, a discrete element method-computational fluid dynamics (DEM-CFD) approach that includes thermal conduction, radiation, and natural convection mechanisms was proposed to simulate the thermal-fluid phenomena after the failure of forced circulation cooling system in a pebble-bed core. The whole large-scale packed bed was created using the DEM technique, and the calculated radial porosity of the bed was validated with empirical correlations reported by researchers. To reduce computational costs, a segment of the bed was extracted, which served as a good representative of the large-scale packed bed for CFD calculation. The temperature distributions simulated with two different fluids in this DEM-CFD approach were in good agreement with SANA experimental data. The influence of the natural convection mechanism on heat transfer must be taken into account for coolants with strong convective capacity. The proposed DEM-CFD methodology offers a computationally efficient and widely applied method for understanding the heat transfer process in a pebble-bed core. The method can also be easily extended to assess the passive safety features of newly designed fluoride-salt-cooled pebble-bed reactors. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31834]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 2.Chinese Acad Sci, CAS Innovat Acad TMSR Energy Syst, Shanghai 201800, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Niu, Q,Wang, NX. Study of heat transfer by using DEM-CFD method in a randomly packed pebble-bed reactor[J]. NUCLEAR SCIENCE AND TECHNIQUES,2019,30(2):—. |
| APA | Niu, Q,&Wang, NX.(2019).Study of heat transfer by using DEM-CFD method in a randomly packed pebble-bed reactor.NUCLEAR SCIENCE AND TECHNIQUES,30(2),—. |
| MLA | Niu, Q,et al."Study of heat transfer by using DEM-CFD method in a randomly packed pebble-bed reactor".NUCLEAR SCIENCE AND TECHNIQUES 30.2(2019):—. |
入库方式： OAI收割
来源：上海应用物理研究所
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