Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR026452 |
Assessment and prediction of pore‐scale reactive mixing from experimental conservative transport data | |
Lazaro J. Perez; Juan J. Hidalgo; Alexandre Puyguiraud; Joaquin Jimé; nez‐; Martí; nez; Marco Dentz | |
2020-05-25 | |
发表期刊 | Water Resources Research
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出版年 | 2020 |
英文摘要 | We investigate the impact of pore‐scale heterogeneity on reactive mixing using experimental data from inert fluid‐fluid displacement in a quasi two‐dimensional porous medium. We interpret the invading and defending fluids as the conservative components A+C and B+C of the instantaneous irreversible bimolecular chemical reaction A + B → C, and determine the reaction product C. We find strong growth of the reaction rate at short and intermediate times due to deformation of the mixing interface, and heterogeneity‐induced increase of the mixing area. This behavior is captured by a dispersive lamella approach that quantifies the mixing dynamics at the interface in terms of temporally evolving effective dispersion coefficients. The latter capture the dominant controls on the evolution of the mixing interface, namely advective heterogeneity and transverse mixing. Reactive transport formulations based on constant hydrodynamic dispersion coefficients are not able to describe the observed behavior due to the lack of complete mixing on the support scale, which is required for these approaches to hold. These results shed some new light on the origins of heterogeneity‐induced mixing and reaction dynamics in porous media and their systematic upscaling. |
领域 | 资源环境 |
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/271692 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | Lazaro J. Perez,Juan J. Hidalgo,Alexandre Puyguiraud,等. Assessment and prediction of pore‐scale reactive mixing from experimental conservative transport data[J]. Water Resources Research,2020. |
APA | Lazaro J. Perez.,Juan J. Hidalgo.,Alexandre Puyguiraud.,Joaquin Jimé.,nez‐.,...&Marco Dentz.(2020).Assessment and prediction of pore‐scale reactive mixing from experimental conservative transport data.Water Resources Research. |
MLA | Lazaro J. Perez,et al."Assessment and prediction of pore‐scale reactive mixing from experimental conservative transport data".Water Resources Research (2020). |
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