CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Study of heat transfer by using DEM-CFD method in a randomly packed pebble-bed reactor
Niu, Q; Wang, NX
2019
Source PublicationNUCLEAR SCIENCE AND TECHNIQUES
ISSN1001-8042
Volume30Issue:2Pages:
Subtype期刊论文
AbstractThe 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.
KeywordTHERMAL-CONDUCTIVITY MODEL FLOW CONTACT VALIDATION SIMULATION CONVECTION GAS
DOI10.1007/s41365-019-0556-8
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/31834
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.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
Recommended Citation
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):—.
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