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DOI | 10.1029/2021GL095619 |
A Novel Experimental Study on Density-driven Instability and Convective Dissolution in Porous Media | |
Ruichang Guo; Hanxing Sun; Qingqi Zhao; Zihao Li; Yang Liu; Cheng Chen | |
2021-11-24 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Geological carbon dioxide (CO2) sequestration (GCS) in deep saline aquifers is a promising solution to mitigating the impact of anthropogenic CO2 emissions on global climate change. CO2 dissolved in formation water increases the solution density and can lead to miscible density-driven downward convection, which significantly accelerates the dissolution trapping of injected CO2. Experimental studies on miscible density-driven convection have been limited. In the laboratory, we found an empirical linear correlation between reflected green light intensity and solute concentration, which enabled in situ measurements of solute concentrations in the spatial and temporal domains and consequently the mass flux across the top boundary of the porous medium. Using the novel experimental techniques, we determined the critical Rayleigh-Darcy number and critical time scales for the onset of density-driven instability and convective dissolution. This is the first study to determine these critical system parameters using laboratory experiments. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/342380 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Ruichang Guo,Hanxing Sun,Qingqi Zhao,et al. A Novel Experimental Study on Density-driven Instability and Convective Dissolution in Porous Media[J]. Geophysical Research Letters,2021. |
APA | Ruichang Guo,Hanxing Sun,Qingqi Zhao,Zihao Li,Yang Liu,&Cheng Chen.(2021).A Novel Experimental Study on Density-driven Instability and Convective Dissolution in Porous Media.Geophysical Research Letters. |
MLA | Ruichang Guo,et al."A Novel Experimental Study on Density-driven Instability and Convective Dissolution in Porous Media".Geophysical Research Letters (2021). |
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