DEM-CFD simulation of modular PB-FHR core with two-grid method
Liu, FR; Chen, XW; Li, Z; Wang, NX
2017
发表期刊NUCLEAR SCIENCE AND TECHNIQUES
ISSN2210-3147
卷号28期号:7页码:100
文章类型期刊论文
摘要For designing and optimizing the reactor core of modular pebble-bed fluoride salt-cooled high-temperature reactor (PB-FHR), it is of importance to simulate the coupled fluid and particle flow due to strong coolant-pebble interactions. Computational fluid dynamics and discrete element method (DEM) coupling approach can be used to track particles individually while it requires a fluid cell being greater than the pebble diameter. However, the large size of pebbles makes the fluid grid too coarse to capture the complicated flow pattern. To solve this problem, a two-grid approach is proposed to calculate interphase momentum transfer between pebbles and coolant without the constraint on the shape and size of fluid meshes. The solid velocity, fluid velocity, fluid pressure and void fraction are mapped between hexahedral coarse particle grid and fine fluid grid. Then the total interphase force can be calculated independently to speed up computation. To evaluate suitability of this two-grid approach, the pressure drop and minimum fluidization velocity of a fluidized bed were predicted, and movements of the pebbles in complex flow field were studied experimentally and numerically. The spouting fluid through a central inlet pipe of a scaled visible PB-FHR core facility was set up to provide the complex flow field. Water was chosen as liquid to simulate the molten salt coolant, and polypropylene balls were used to simulate the pebble fuels. Results show that the pebble flow pattern captured from experiment agrees well with the simulation from two-grid approach, hence the applicability of the two-grid approach for the later PB-FHR core design.
关键词Particle Systems Fluidized-bed Heat-transfer Model
DOI10.1007/s41365-017-0246-3
关键词[WOS]PARTICLE SYSTEMS ; FLUIDIZED-BED ; HEAT-TRANSFER ; MODEL
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28599
专题中科院上海应用物理研究所2011-2018年
推荐引用方式
GB/T 7714
Liu, FR,Chen, XW,Li, Z,et al. DEM-CFD simulation of modular PB-FHR core with two-grid method[J]. NUCLEAR SCIENCE AND TECHNIQUES,2017,28(7):100.
APA Liu, FR,Chen, XW,Li, Z,&Wang, NX.(2017).DEM-CFD simulation of modular PB-FHR core with two-grid method.NUCLEAR SCIENCE AND TECHNIQUES,28(7),100.
MLA Liu, FR,et al."DEM-CFD simulation of modular PB-FHR core with two-grid method".NUCLEAR SCIENCE AND TECHNIQUES 28.7(2017):100.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
DEM-CFD simulation o(2231KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liu, FR]的文章
[Chen, XW]的文章
[Li, Z]的文章
百度学术
百度学术中相似的文章
[Liu, FR]的文章
[Chen, XW]的文章
[Li, Z]的文章
必应学术
必应学术中相似的文章
[Liu, FR]的文章
[Chen, XW]的文章
[Li, Z]的文章
相关权益政策
暂无数据
收藏/分享
文件名: DEM-CFD simulation of modular PB-FHR core with two-grid method.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。