A fast region homogenization method based on experimental data for pebble flow

被引：3

作者：

Liu, Yujia ^{[1
]}

Liu, Xu ^{[1
]}

Peng, Sifan ^{[1
]}

Gui, Nan ^{[1
]}

Yang, Xingtuan ^{[1
]}

Tu, Jiyuan ^{[1
,2
]}

Jiang, Shengyao ^{[1
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Collaborat Innovat Ctr Adv Nucl Energy Technol, Key Lab Adv Reactor Engn & Safety,Minist Educ, Beijing 100084, Peoples R China

[2] RMIT Univ, Sch Engn, Melbourne, Vic 3083, Australia

来源：

POWDER TECHNOLOGY | 2022年 / 396卷

关键词：

Region homogenization; Pebble flow; Particle tracking velocimetry; Hough transform; Geometric relationships; GRANULAR FLOW; DEM; SIMULATION; ALGORITHM;

D O I：

10.1016/j.powtec.2021.11.009

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Particle movement in pebble bed has important applications in engineering. A fast region homogenization method based on experimental silo discharging process is proposed in this paper. It can obtain the particle information from the particle motion image, and quickly calculate the homogenization information of the region. Hough transform is applied to the image of silo unloading process in order to obtain the information of particle centroid and radius. The particle tracking velocimetry (PTV) algorithm processes two continuous images to realize particle matching. Based on the trajectories of the particle, a fast region homogenization method is developed to obtain the homogenization information of the region. By analyzing the possible relative geometric relationships between mesh elements and particles, the hash set is constructed in advance to quickly calculate the regional homogenization parameters. Compared with the traditional integral method, the calculation speed is greatly accelerated on the premise of ensuring the calculation accuracy. Finally, the particle area characteristics (average velocity and filling rate) of the near wall area and the central area of the pebble bed are compared. (c) 2021 Elsevier B.V. All rights reserved.

引用

页码：522 / 534

页数：13

共 50 条

[31] Experimental method for studying flow characteristics in an aqueduct's transition region
Su, Luping
[J]. Ren Min Chang Jiang/Yangtze River, 1996, 27 (02):
[32] Effects of density difference and loading ratio on pebble flow in a three-dimensional two-region-designed pebble bed
Wu, Mengqi
Gui, Nan
Wu, Hao
Yang, Xingtuan
Tu, Jiyuan
Jiang, Shengyao
[J]. ANNALS OF NUCLEAR ENERGY, 2019, 133 : 924 - 936
[33] A Fast Region-based Image Segmentation Based on Least Square Method
Chen, Gang
Hu, Tai
Guo, Xiaoyong
Meng, Xin
[J]. 2009 IEEE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN AND CYBERNETICS (SMC 2009), VOLS 1-9, 2009, : 972 - 977
[34] Numerical homogenization by using the fast multipole boundary element method
Ptaszny, J.
Fedelinski, P.
[J]. ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING, 2011, 11 (01) : 181 - 193
[35] NEW CONTROL ROD HOMOGENIZATION METHOD FOR FAST-REACTORS
KITADA, T
KOSAKA, S
TAKEDA, T
HOJUYAMA, T
YANO, M
[J]. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, 1994, 31 (07) : 647 - 653
[36] A Method of Secure Information Flow Based on Data Flow Analysis
Yao, Jianbo
[J]. SOFTWARE ENGINEERING AND KNOWLEDGE ENGINEERING: THEORY AND PRACTICE, VOL 1, 2012, 114 : 597 - 606
[37] Pebble Flow and Coolant Flow Analysis Based on a Fully Coupled Multiphysics Model
Li, Yanheng
Ji, Wei
[J]. NUCLEAR SCIENCE AND ENGINEERING, 2013, 173 (02) : 150 - 162
[38] HOMOGENIZATION-BASED NUMERICAL METHOD
Frenod, Emmanuel
[J]. DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES S, 2016, 9 (05): : I - IX
[39] Homogenization method based on eigenvector expansions
Xing, Yufeng
Tian, Jinmei
Zhu, Dechao
Xie, Wenjian
[J]. INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING, 2006, 4 (01) : 197 - 206
[40] Data Assimilation Method based on the Constraints of Confidence Region
Li, Yong
Li, Siming
Sheng, Yao
Wang, Luheng
[J]. ADVANCES IN ATMOSPHERIC SCIENCES, 2018, 35 (03) : 334 - 345

← 1 2 3 4 5 →