Numerical Simulation of Methane-Air Premixed Combustion Process in a Randomly Packed Bed

被引：0

作者：

Jiang L.-S. ^{[1
]}

Liu H.-S. ^{[1
]}

Wu D. ^{[2
]}

Xie M.-Z. ^{[1
]}

机构：

[1] Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian

[2] Department of Mechanical and Power Engineering, Yingkou Institute of Technology, Yingkou

来源：

Dongbei Daxue Xuebao/Journal of Northeastern University | 2019年 / 40卷 / 07期

关键词：

Flame surface; Packed bed; Premixed combustion; Random structure; Thermal storage capacity;

D O I：

10.12068/j.issn.1005-3026.2019.07.010

中图分类号：

学科分类号：

摘要：

Three dimensional random geometric structure of pellets packed bed was modeled using the discrete element software LIGGGHTS. Large eddy simulation method, two-temperature model and EBU-Arrhenius combustion model were employed to simulate the premixed combustion process of methane-air in the randomly packed bed. The calculated results are compared with experiment data to verify effectiveness of the model. The structure and the shape of the flame and the temperature distribution in the packed bed were analyzed. The simulation results show that the temperature of solid is higher than that of gas on the same height of the packed bed during the late stage of combustion, which reflects a good thermal storage capacity of the porous medium. The height difference of the fame surface between the tube wall and the center in the packed bed is much smaller than that in tube without porous media, which suggests that the flame is divided by the packed bed and then the uniformity and stability of the combustion within a porous medium are improved. © 2019, Editorial Department of Journal of Northeastern University. All right reserved.

引用

页码：962 / 967

页数：5

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