LATTICE BOLTZMANN SIMULATION OF DYNAMIC OXYGEN ADSORPTION IN COAL BASED ON FRACTAL CHARACTERISTICS

被引：3
|
作者：
Li, Zijin [1 ]
Guo, Huiyan [1 ]
Zhou, Hongxiang [1 ]
Guo, Chang [2 ]
Nie, Rongshan
Liang, Xiaoyu [1 ,2 ]
机构：
[1] China Jiliang Univ, Coll Metrol & Measurement Engn, Hangzhou, Peoples R China
[2] China Jiliang Univ, Coll Qual & Safety Engn, Hangzhou, Peoples R China
来源：
THERMAL SCIENCE | 2023年 / 27卷 / 4A期
关键词：
coal oxygen adsorption; fractal dimension; pore structure; lattice Boltzmann method; HEAT-TRANSFER;
D O I：
10.2298/TSCI220718202L
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The issue of coal spontaneous combustion greatly threatens the production safety of coal mining, storage, and transportation. It is significant to study oxygen adsorption understand the mechanism of coal spontaneous combustion. In this paper, based on the fractal dimension of coal and the self-similar fractal geometry, the internal pore structure of coal is modeled. Then, the lattice Boltzmann method is employed to conduct the numerical simulation of oxygen adsorption in coal. Compared with the existing experimental data and numerical simulation, the lattice Boltzmann method is verified to be correct. The numerical results indicate that in the process of oxygen adsorption in coal, the preferential flow occurs when the large pores connect to the channel. In the meantime, the large diffusion coefficient leads to an early time for adsorption equilibrium. The oxygen adsorption increases with an increased adsorption rate constant. Pore structure plays a significant role in the adsorption behavior of oxygen in coal. The results can provide theoretical support for reducing coal spontaneous combustion and ensuring coal mine safety in production.
引用
收藏
页码：2789 / 2800
页数：12
相关论文
共 50 条
  • [1] Multicomponent Lattice Boltzmann Simulations of Gas Transport in a Coal Reservoir with Dynamic Adsorption
    Peng, Zhigao
    Liu, Shenggui
    Tang, Songlei
    Zhao, Yuechao
    Li, Yingjun
    GEOFLUIDS, 2018,
  • [2] STUDY OF FRACTAL BASED OXYGEN ADSORPTION EXPERIMENT OF POROUS COAL
    Liang, Xiaoyu
    Lv, Xianzhe
    Chen, Linya
    Li, LinQi
    Xu, Peng
    Zhou, Hongxiang
    THERMAL SCIENCE, 2022, 26 (01): : 517 - 527
  • [3] Lattice Boltzmann simulation of fluid flow through coal reservoir's fractal pore structure
    JIN Yi
    SONG HuiBo
    HU Bin
    ZHU YiBo
    ZHENG JunLing
    Science China Earth Sciences, 2013, 56 (09) : 1519 - 1530
  • [4] Lattice Boltzmann simulation of fluid flow through coal reservoir’s fractal pore structure
    Yi Jin
    HuiBo Song
    Bin Hu
    YiBo Zhu
    JunLing Zheng
    Science China Earth Sciences, 2013, 56 : 1519 - 1530
  • [5] Lattice Boltzmann simulation of fluid flow through coal reservoir's fractal pore structure
    Jin Yi
    Song HuiBo
    Hu Bin
    Zhu YiBo
    Zheng JunLing
    SCIENCE CHINA-EARTH SCIENCES, 2013, 56 (09) : 1519 - 1530
  • [6] A Simulation of Gas Flow in Coal Lane Based on Lattice Boltzmann Method
    Lu, Qiu-qin
    Wei, Xian-gang
    2009 3RD INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING, VOLS 1-11, 2009, : 3724 - 3727
  • [7] Simulation of gas drainage in fissured coal based on Lattice Boltzmann Method
    Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao 266510, China
    Meitan Xuebao, 2008, 8 (914-919):
  • [8] Dynamic simulation of nanofluids by the lattice Boltzmann method
    Wu, X
    Xuan, YM
    ENERGY AND ENVIRONMENT, VOLS 1 AND 2, 2003, : 633 - 638
  • [9] Lattice Boltzmann Simulation of the Kinetics Process of Methane Diffusion with the Adsorption-Desorption Hysteresis Effect in Coal
    Peng, Zhigao
    Liu, Shenggui
    Long, Yanqing
    Xiao, Ming
    Feng, Haoxiong
    ACS OMEGA, 2023, : 31135 - 31144
  • [10] Lattice Boltzmann simulation for heat and mass transfer in fractal porous media
    Chen, Z. (zqchen@seu.edu.cn), 1600, Materials China (65):
12345