Numerical investigation of particles flow pattern and pressure distribution of coal bunker

被引：9

作者：

Zhu, Defu ^{[1
,3
,4
,5
]}

Ji, Xingwang ^{[1
]}

Huo, Yuming ^{[1
,2
]}

Wang, Zhonglun ^{[1
]}

Yu, Biaobiao ^{[1
]}

Wang, Deyu ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Key Lab Insitu Property & Improving Min, Minist Educ, Taiyuan 030024, Shanxi, Peoples R China

[2] China Univ Min & Technol, Key Lab Deep Coal Resource Min, Minist Educ, Xuzhou 221100, Jiangsu, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Aerosp Engn, Xian 710049, Shaanxi, Peoples R China

[4] Galuminium Grp co Ltd, Guangzhou 510450, Guangdong, Peoples R China

[5] Aluminum Magnesium Based New Mat R&D Co Ltd, Xing Xian Cty Econ & Technol Dev Zone, Lyuliang 033099, Shanxi, Peoples R China

来源：

JOURNAL OF GEOPHYSICS AND ENGINEERING | 2023年 / 20卷 / 04期

基金：

中国国家自然科学基金;

关键词：

coal bunker; parameter calibration; flow pattern; over-pressure: pressure arch; FLAT BOTTOM; WALL; DISCHARGE; SILOS; SIMULATION; POCKET; REPOSE; ANGLE; MODEL;

D O I：

10.1093/jge/gxad052

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The stable loading and operation of a coal bunker is critical for efficient production. In this study, the coal particle contact parameters were calibrated based on the angle of repose characteristics. The loading and discharging process of the coal bunker was simulated using the EDEM program. In addition, the flow pattern of the coal particles and the distribution characteristics of the wall pressure were investigated. The results indicate that the coal particles in the bunker can be divided into two flow patterns: mass flow and funnel flow. During discharging, the wall pressure fluctuated and exhibited a local over-pressure phenomenon, with a maximum pressure coefficient of 1.75. Finally, this study provides a reasonable explanation for the transformation of the flow pattern of coal particles and the distribution characteristics of wall pressure based on the mechanism of pressure arch influence. The findings of this study can provide theoretical guidance for designing coal bunker structures.

引用

页码：841 / 853

页数：13

共 31 条

[1] Wall normal stress characteristics in an experimental coal silo [J].

An, Haiquan ;

Wang, Xin ;

Fang, Xinhui ;

Liu, Zhen ;

Liang, Cai .

POWDER TECHNOLOGY, 2021, 377 :657-665

[2] Correlation between the flow pattern and wall pressures in a full scale experimental silo [J].

Chen, J. F. ;

Rotter, J. M. ;

Ooi, J. Y. ;

Zhong, Z. .

ENGINEERING STRUCTURES, 2007, 29 (09) :2308-2320

[3] Calibration of the discrete element method [J].

Coetzee, C. J. .

POWDER TECHNOLOGY, 2017, 310 :104-142

[4] Assessment of angle of repose of granular plant material using computer image analysis [J].

Fraczek, J. ;

Zlobecki, A. ;

Zemanek, J. .

JOURNAL OF FOOD ENGINEERING, 2007, 83 (01) :17-22

[5]

Frey Alfons, 2008, VGB Powertech, V88, P81

[6] Simulation of silo filling and discharge with experimental data [J].

Gallego, Eutiquio ;

Ruiz, Angel ;

Aguado, Pedro J. .

COMPUTERS AND ELECTRONICS IN AGRICULTURE, 2015, 118 :281-289

[7] Rectangular steel silos: Finite element predictions of filling wall pressures [J].

Goodey, R. J. ;

Brown, C. J. ;

Rotter, J. M. .

ENGINEERING STRUCTURES, 2017, 132 :61-69

[8] Experimental investigation of wall pressure and arching behavior under surcharge pressure in mass-flow hoppers [J].

Guo, Jie ;

Roberts, Alan W. ;

Prigge, Jan-Dirk .

POWDER TECHNOLOGY, 2014, 258 :272-284

[9]

Janelid I., 1966, INT J ROCK MECH SCI, V3, P129, DOI DOI 10.1016/0148-9062(66)90004-0

[10]

Janssen HA., 1895, Z VEREINES DEUTCHER, V39, P1045

← 1 2 3 4 →