دورية أكاديمية
Upscaling dispersivity for conservative solute transport in naturally fractured media.
| العنوان: | Upscaling dispersivity for conservative solute transport in naturally fractured media. |
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| المؤلفون: | Jia S; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, China; College of Construction Engineering, Jilin University, Changchun, China., Dai Z; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, China; College of Construction Engineering, Jilin University, Changchun, China. Electronic address: dzx@jlu.edu.cn., Zhou Z; CNNC Key Laboratory on Geological Disposal of High-level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing, China., Ling H; CNNC Key Laboratory on Geological Disposal of High-level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing, China., Yang Z; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, China; College of Construction Engineering, Jilin University, Changchun, China., Qi L; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, China; College of Construction Engineering, Jilin University, Changchun, China., Wang Z; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, China; College of Construction Engineering, Jilin University, Changchun, China., Zhang X; Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, China; College of Construction Engineering, Jilin University, Changchun, China. Electronic address: xiaoyingzh@jlu.edu.cn., Thanh HV; Laboratory for Computational Mechanics, Institute for Computational Science and Artificial Intelligence, Van Lang University, Ho Chi Minh City, Viet Nam; Faculty of Mechanical - Electrical and Computer Engineering, School of Technology, Van Lang University, Ho Chi Minh City, Viet Nam., Soltanian MR; Departments of Geosciences and Environmental Engineering, University of Cincinnati, Cincinnati, OH, USA. |
| المصدر: | Water research [Water Res] 2023 May 15; Vol. 235, pp. 119844. Date of Electronic Publication: 2023 Mar 15. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Pergamon Press Country of Publication: England NLM ID: 0105072 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-2448 (Electronic) Linking ISSN: 00431354 NLM ISO Abbreviation: Water Res Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Oxford, Pergamon Press. |
| مواضيع طبية MeSH: | Water Movements* , Groundwater*, Models, Theoretical ; Water Quality |
| مستخلص: | Physical heterogeneities are prevalent features of fracture systems and significantly impact transport processes in aquifers across different spatiotemporal scales. Upscaling solute transport parameter is an effective way of quantifying parameter variability in heterogeneous aquifers including fractured media. This paper develops conceptual models for upscaling conservative transport parameters in fracture media. The focus is on upscaling dispersivity. Lagrangian-based transport model (LBTM) for dispersivity upscaling are derived for the solute transport in two-dimensional fractures surrounded by an impermeable matrix. The LBTM is validated against the random walk particle tracking (RWPT) model, which enables highly efficient and accurate predictions of conservative solute transport. The results show that the derived scale-dependent analytical expressions are in excellent agreement with RWPT model results. In addition, LBTM results are also compared to experimental results from the observed breakthrough curve of a conservative solute transport through a single natural fracture within a granite core. Comparing results from the LBTM and transport experiment shows that LBTM based estimated dispersivity is 10.55% higher than the measured value. Errors introduced by the experiments, the conceptual assumptions in deriving models, and the heterogeneities of fracture apertures not fully sampled by measuring instruments are main factor for such discrepancy. The sensitivity analysis indicates that the longitudinal and transverse dispersivities are positively related to the integral scale and the variance of the log-fracture aperture. The longitudinal dispersivity is strongly contolled by the variance of the log-fracture aperture. The LBTM may be useful for directly predicting solute transports, requiring only the acquisition of fractured geostatistical data. This work provides a better understanding of transport processes in fractured media which ultimately control water quality across scales. Competing Interests: Declaration of Competing Interest The authors declare that there is no conflict of interest regarding the publication of this article. (Copyright © 2023 Elsevier Ltd. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Dispersivity; Fracture; Lagrangian-based model; Random walk particle tracking; Sensitivity analysis; Transport experiment |
| تواريخ الأحداث: | Date Created: 20230317 Date Completed: 20230418 Latest Revision: 20230418 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1016/j.watres.2023.119844 |
| PMID: | 36931187 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1879-2448 |
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| DOI: | 10.1016/j.watres.2023.119844 |