化工进展2017，Vol.36Issue(11)：3955-3962,8.DOI:10.16085/j.issn.1000-6613.2017-0567
孔隙尺度下超临界CO2驱水两相流数值模拟
Pore-scale two-phase numerical simulation of supercritical carbon dioxide displacement of water
摘要
Abstract
The computational method of pore-scale porous media is established by using Volume of Fluid(VOF)numerical simulation method based on the background of CO2 storage in Saline aquifer, and the migration mechanism of supercritical carbon dioxide(Sc-CO2)injection into porous media containing water is studied. The effects of capillary number,geological storage pressure,Sc-CO2 injection temperature,two-phase surface tension coefficient and contact angle on the two-phase migration rate and the displacement efficiency were analyzed. At the same time,displacement efficiency was compared with experimental data under different capillary numbers. The result showed that with the increase of capillary number,displacement efficiency decreases first and then becomes stable,and the numerical simulation of displacement efficiency agrees well with experimental data under different capillary numbers. Under the same porosity,when wall surface is hydrophilic,wall surface wettability is better. The faster the rate of displacement,while the displacement efficiency decreased. At the same time,the lower geological storage pressure,the higher the injection temperature. Small surface tension coefficient has a higher displacement rate and efficiency.关键词
超临界二氧化碳/咸水层封存/孔隙尺度/数值模拟/两相流/毛细管数/接触角Key words
supercritical carbon dioxide/saline aquifer storage/pore-scale/numerical simulation/two-phase flow/capillary number/contact angle分类
能源科技引用本文复制引用
姜水生,赵万东,张莹,李培生,王昭太,钟源..孔隙尺度下超临界CO2驱水两相流数值模拟[J].化工进展,2017,36(11):3955-3962,8.基金项目
基金项目:国家自然科学基金(51566012,11562011)、江西省科技厅支撑项目(2009BGA01800)及江西省研究生创新基金 (YC2017-S056)项目. （51566012,11562011）
