Open AccessA fluid‐solid coupling method for the simulation of gas transport in porous coal and rock media
Author(s) -
Zhang Cun,
Liu Jinbao,
Zhao Yixin,
Zhang Lei,
Guo Junting
Publication year - 2019
Publication title -
energy science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 29
ISSN - 2050-0505
DOI - 10.1002/ese3.400
Subject(s) - permeability (electromagnetism) , coal , porous medium , computer simulation , coupling (piping) , porosity , coal mining , geotechnical engineering , fluid dynamics , stress (linguistics) , reservoir simulation , stress field , petroleum engineering , mechanics , geology , materials science , engineering , structural engineering , simulation , mechanical engineering , finite element method , linguistics , philosophy , physics , waste management , genetics , biology , membrane
Understanding coal and rock permeability, and the corresponding influence on stress, is important in the field of energy development. In applied engineering, there is a tendency to employ three‐dimensional methods that are simpler, less time‐ and cost‐expensive, less computationally expensive, and larger scale. Thus, a numerical simulation fluid‐solid coupling method is proposed in this paper. The proposed numerical simulation method utilizes the stress‐permeability test results for elastic and plastic coal samples. The permeability models of the elastic and plastic coal samples under loading and unloading were obtained by fitting the experimental results and embedded them into FLAC 3D software by using FISH language. The results of the uniaxial and triaxial flow simulations are consistent with the experimental results, thereby confirming the accuracy and feasibility of the numerical method proposed in this paper. This allows the permeability of the numerical reservoir model to be continuously updated according to the current stress level in the production process.