岩土力学2017，Vol.38Issue(3)：663-671,9.DOI:10.16285/j.rsm.2017.03.007
含喉部裂隙介质CO2反应迁移的格子Boltzmann模拟研究
Lattice Boltzmann simulation of CO2 reactive transport in throat fractured media
摘要
Abstract
CO2 geological storage is one of the most economical and reliable techniques for reducing CO2 emission,and the understanding of CO2 reactive transport in reservoirs is critical for that.Dardis's porous model,coupled with our previous CO2 reactive model,is presented to investigate the reactive transport in throat fractured media.According to the velocity field results,the velocity in fracture is much higher than that in matrix and it reaches the maximum value at centerline in throat.The main dissolution reaction occurs near the inlet region,and along the upper and bottom edges of the fracture.There is nearly no dissolution along the edges after downstream throat,which is mainly affected by the throat.The concentration ofH+ ion in fracture and throat is higher than that in the matrix;while the higher concentration of Ca2+ ion occurs in the region of downstream matrix.And then,the comparisons among different throat positions are also made to analyze the effects of the throat position on the distribution of dissolution rate and species concentration.Finally,the fractured media with sudden reaming is simulated,and it is found that the velocity and component migration in the fracture are enhanced,which is totally contrary to the case with throat fracture.All the above results show the capability of the present model in simulating CO2 reactive transport in complex fractured media.关键词
格子Boltzmann方法(LBM)/CO2反应迁移/喉部裂隙介质Key words
lattice Boltzmann method (LBM)/CO2 reactive transport/throat fractured media分类
数理科学引用本文复制引用
田智威,谭云亮..含喉部裂隙介质CO2反应迁移的格子Boltzmann模拟研究[J].岩土力学,2017,38(3):663-671,9.基金项目
国家自然科学基金(No.51104133,No.51474137) （No.51104133,No.51474137）
煤矿灾害动力学与控制国家重点试验室开放课题(No.2011DA105287-KF201304).This work was supported by the National Natural Science Foundation of China (51104133,51474137) and the Scientific Research Foundation of State Key Laboratory of Coal Mine Disaster Dynamics and Control (2011DA105287-KF201304). （No.2011DA105287-KF201304）
