气候变化领域集成服务门户(CCPortal): A multiscale study of density-driven flow with dissolution in porous media

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DOI	10.1016/j.advwatres.2020.103640
	A multiscale study of density-driven flow with dissolution in porous media
	Meng X.; Sun H.; Guo Z.; Yang X.
发表日期	2020
ISSN	0309-1708
卷号	142
英文摘要	In the present work, a suite of numerical experiments with linear stability analysis are conducted to study density-driven flow with chemical dissolution of two reactive fluids in synthetic porous media. Linear stability analysis at the Darcy scale is first performed to predict the interfacial phenomena and instability at the initial time. Pore-scale simulations using the lattice Boltzmann method (LBM) are further conducted to capture more mechanistic information and advance the understanding of the transport processes. Under different scenarios, it is demonstrated that the transport processes exhibit distinct behaviors, which are largely dominated by the interplay among density contrast, chemical reaction rate and evolution of the porosity/permeability. All the results indicate that the interfacial instability can be triggered by the density contrast between two miscible fluids, leading to the Rayleigh-Taylor (R-T) instability. The R-T instability can be suppressed by the heterogeneous surface reaction between the fluid and solid phases, which prevents the transport of the denser fluid. Over the long term, it is found that the interfacial instability is influenced by the evolution of the porosity/permeability due to dissolution, which potentially restarts the transport of the denser fluid. © 2020 Elsevier Ltd
关键词	Chemical analysis Chemical stability Dissolution Linear stability analysis Porosity Porous materials Surface reactions Chemical dissolution Heterogeneous surface reaction Interfacial instability Interfacial phenomena Lattice boltzmann methods (LBM)Numerical experiments Pore-scale simulation Synthetic porous media Transport properties dissolution fluid flow numerical model porosity porous medium Rayleigh number solute transport stability analysis
语种	英语
来源机构	Advances in Water Resources
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/131778
推荐引用方式 GB/T 7714	Meng X.,Sun H.,Guo Z.,et al. A multiscale study of density-driven flow with dissolution in porous media[J]. Advances in Water Resources,2020,142.
APA	Meng X.,Sun H.,Guo Z.,&Yang X..(2020).A multiscale study of density-driven flow with dissolution in porous media.,142.
MLA	Meng X.,et al."A multiscale study of density-driven flow with dissolution in porous media".142(2020).