Numerical simulation of gas flow based on three-dimensional reconstruction using computed tomography
- DOI
- 10.2991/coal-16.2016.74How to use a DOI?
- Keywords
- CT; three-dimensional reconstruction; DTM; reverse engineering; gas flow
- Abstract
In order to obtain the real physical model characterizing the pore and fissure structures of coal rocks and explore the seepage rules of coalbed methane (CBM) using numerical simulation, we proposed a sequential study method from real coal model to coal CAD model to coal finite element model. The coal sample from Changzhi Shanxi was scanned using high precision CT225kVFCB CT system and the obtained CT data were subject to threshold segmentation using the compensated DTM method. The real model of coal is converted to the CAD model of coal by reverse engineering, Lastly, The coal body finite element model established by Ansys as an example, the seepage of coal gas were simulated, analyzed coal pore pressure and velocity distribution, the permeability coefficient of X, Y, along the Z direction and calculation. Calculation results show that the micro scale (< 100 µm) coal permeability anisotropy, which is affected by coal body structure is obvious. The numerical simulation results show that with the increase of the pressure gradient at the micro scale, the penetration velocity of the gas in the fracture section is gradually increased.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Chu Xiangyu AU - Wang Gang PY - 2016/10 DA - 2016/10 TI - Numerical simulation of gas flow based on three-dimensional reconstruction using computed tomography BT - Proceedings of the 8th Russian-Chinese Symposium “Coal in the 21st Century: Mining, Processing, Safety" PB - Atlantis Press SP - 385 EP - 391 SN - 2352-5401 UR - https://doi.org/10.2991/coal-16.2016.74 DO - 10.2991/coal-16.2016.74 ID - Xiangyu2016/10 ER -