Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR025476 |
Regressed Models for Multirate Mass Transfer in Heterogeneous Media | |
Elenius, Maria T.1; Abriola, Linda M.2 | |
2019-11-06 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Sweden; USA |
英文摘要 | Several applications to flow and transport in sorptive porous media are fundamentally dependent on the heterogeneous medium properties. This poses a challenge for direct numerical simulations, as fine grids are needed. One alternative approach is the application of the multirate mass transfer (MRMT) method. In this approach, rather than explicitly modeling immobile regions, such as clay layers, the solute concentration in these regions is treated by explicit state variables, and the transport between mobile and immobile regions is modeled by first-order exchange terms. In the implementation of this approach, fine-scale simulations on subdomains are often necessary to develop appropriate parameters, since regressed models for the estimation of these parameters, based on a priori data, are unavailable. To facilitate applications of MRMT to three-dimensional heterogeneous media at the field scale, in this work, upscaled parameters needed for a two-rate MRMT model are fit to several hundred three-dimensional fine-scale simulations by employing a two-step fitting procedure. The fitted parameters are then regressed with respect to geostatistical, sorptive, and flow parameters. Upscaled simulations using the fitted and the regressed parameters produce breakthrough curves that are very similar to fine-scale curves. The data used to regress the parameters span a range of heterogeneous properties and flow conditions, and the model is demonstrated to be robust to untested parameter values and initial and boundary conditions. These developed regressions can be employed to efficiently account for back-diffusion and desorption in future modeling of transport in heterogeneous media without the need to perform fine-scale simulations. |
英文关键词 | regressed models heterogeneous media multirate mass transfer sorption |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000494647600001 |
WOS关键词 | LOW-PERMEABILITY LENSES ; SOLUTE TRANSPORT ; BREAKTHROUGH CURVES ; POROUS-MEDIA ; DISPERSION ; AQUIFER ; COEFFICIENTS ; SYSTEMS ; CONDUCTIVITY ; DISSOLUTION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/188267 |
专题 | 资源环境科学 |
作者单位 | 1.Swedish Meteorol & Hyrol Inst, Norrkoping, Sweden; 2.Tufts Univ, Dept Civil & Environm Engn, Medford, MA 02155 USA |
推荐引用方式 GB/T 7714 | Elenius, Maria T.,Abriola, Linda M.. Regressed Models for Multirate Mass Transfer in Heterogeneous Media[J]. WATER RESOURCES RESEARCH,2019. |
APA | Elenius, Maria T.,&Abriola, Linda M..(2019).Regressed Models for Multirate Mass Transfer in Heterogeneous Media.WATER RESOURCES RESEARCH. |
MLA | Elenius, Maria T.,et al."Regressed Models for Multirate Mass Transfer in Heterogeneous Media".WATER RESOURCES RESEARCH (2019). |
条目包含的文件 | 条目无相关文件。 |
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