Modelling Gas Diffusion from Breaking Coal Samples with the Discrete Element Method
Joint Authors
Lin, Dan-Ling
Wang, Yucang
Guo, William W.
Source
Mathematical Problems in Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-02-12
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Particle scale diffusion is implemented in the discrete element code, Esys-Particle.
We focus on the question of how to calibrate the particle scale diffusion coefficient.
For the regular 2D packing, theoretical relation between micro- and macrodiffusion coefficients is derived.
This relation is then verified in several numerical tests where the macroscopic diffusion coefficient is determined numerically based on the half-time of a desorption scheme.
To further test the coupled model, we simulate the diffusion and desorption in the circular sample.
The numerical results match the analytical solution very well.
An example of gas diffusion and desorption during sample crushing and fragmenting is given at the last.
The current approach is the first step towards a realistic and comprehensive modelling of coal and gas outbursts.
American Psychological Association (APA)
Lin, Dan-Ling& Wang, Yucang& Guo, William W.. 2015. Modelling Gas Diffusion from Breaking Coal Samples with the Discrete Element Method. Mathematical Problems in Engineering،Vol. 2015, no. 2015, pp.1-5.
https://search.emarefa.net/detail/BIM-1074197
Modern Language Association (MLA)
Lin, Dan-Ling…[et al.]. Modelling Gas Diffusion from Breaking Coal Samples with the Discrete Element Method. Mathematical Problems in Engineering No. 2015 (2015), pp.1-5.
https://search.emarefa.net/detail/BIM-1074197
American Medical Association (AMA)
Lin, Dan-Ling& Wang, Yucang& Guo, William W.. Modelling Gas Diffusion from Breaking Coal Samples with the Discrete Element Method. Mathematical Problems in Engineering. 2015. Vol. 2015, no. 2015, pp.1-5.
https://search.emarefa.net/detail/BIM-1074197
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1074197