Nondilute effects reshape miscible displacement in porous media

Yu, Fei1; Zhang, Yandong1; Zheng, Shuai1; Zhang, Dongxiao1,2; Xu, Ke1

2023-04-19

10.1103/PhysRevFluids.8.044501

PHYSICAL REVIEW FLUIDS   影响因子和分区

2469-990X

Miscible displacement of nondilute fluid pairs in subsurface porous media plays a key role in CO2 subsurface sequestration and many other applications. We conduct microfluidic experiments in a near-fracture porous geometry so that nondilute effects are isolated from other disruptive behaviors. We show that although Darcy-Fickian coupling works well for dilute fluid systems, it completely fails to predict nondilute fluid-fluid displacement. Compared to that predicted by Darcy-Fickian models, nondilute fluid-fluid displacement demonstrates much faster and "diffusive" mixing, an unexpected wedgelike mixing front, and abnormal convection perpendicular to the major concentration. Simply correcting Fick's law cannot reproduce these phenomena. Maxwell-Stefan drifting and Korteweg stress may rationalize experimental observations, but major challenges emerge in micro-scopic modeling and upscaling. We provide this work as a benchmark and call for future study to incorporate appropriate nondilute effect terms at different scales into the modeling of CO2 sequestration and other relevant applications.

SCI ; EI

英语

其他

National Natural Science Foundation of China[12172010] ; National Natural Science Foundation of China["1217","2010"]

Physics

Physics, Fluids & Plasmas

WOS:000974600300001

AMER PHYSICAL SOC

20231814036341

Benchmarking ; Carbon dioxide ; Fick's laws ; Mixing

Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Mathematics:921 ; Mechanics:931.1 ; Materials Science:951

Web of Science

1.Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China

Yu, Fei,Zhang, Yandong,Zheng, Shuai,et al. Nondilute effects reshape miscible displacement in porous media[J]. PHYSICAL REVIEW FLUIDS,2023,8(4).

Yu, Fei,Zhang, Yandong,Zheng, Shuai,Zhang, Dongxiao,&Xu, Ke.(2023).Nondilute effects reshape miscible displacement in porous media.PHYSICAL REVIEW FLUIDS,8(4).

Yu, Fei,et al."Nondilute effects reshape miscible displacement in porous media".PHYSICAL REVIEW FLUIDS 8.4(2023).