气候变化领域集成服务门户(CCPortal): Characterization of Pore Water Flow in 3-D Heterogeneous Permeability Fields

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DOI	10.1029/2019GL086879
	Characterization of Pore Water Flow in 3-D Heterogeneous Permeability Fields
	Geng X.; Boufadel M.C.; Lee K.; An C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:3
英文摘要	Subsurface heterogeneity could influence groundwater flow with implications on structure and productivity of aquifer ecosystems. Here we investigate effects of multifractal heterogeneity on topology of groundwater flow through MODFLOW simulations within a Monte Carlo framework. The results show that heterogeneity leads to focused groundwater advection and the creation of hotspots of bending-type vortex flow in the fields. We demonstrate for the first time that the vortex structures characterized by Q criterion are 3-D distributed and greatly deform surrounding pore-water flow. The structures exhibit scale-invariant features in multifractal fields and in stationary fields below the correlation scale, indicating that such vortex flow might be widely present with no characteristic scale. Complex spatial patterns of kinetic energy dissipation rate are identified for pore water flowing through heterogeneous porous media and correlate strongly with preferential flows. These findings are important for understanding solute fate and transport in aquifer systems. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aquifers; Energy dissipation; Fractals; Groundwater flow; Groundwater resources; Hydraulics; Hydrogeology; Kinetic energy; Kinetics; Monte Carlo methods; Porous materials; Groundwater advections; Heterogeneous aquifers; Heterogeneous porous media; Multifractality; Q criterion; Scale invariance; Scale invariant features; Subsurface heterogeneity; Vortex flow; advection; aquifer; energy dissipation; groundwater flow; heterogeneity; kinetic energy; Monte Carlo analysis; permeability; pore space; porewater; preferential flow; three-dimensional flow; vortex flow
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170787
作者单位	Department of Civil and Environmental Engineering, Center for Natural Resources, New Jersey Institute of Technology, University Heights, Newark, NJ, United States; Department of Fisheries and Oceans, Bedford Institute of Oceanography, Dartmouth, NS, Canada; Department of Building, Civil and Environmental Engineering, Concordia University, Montreal, QC, Canada
推荐引用方式 GB/T 7714	Geng X.,Boufadel M.C.,Lee K.,et al. Characterization of Pore Water Flow in 3-D Heterogeneous Permeability Fields[J],2020,47(3).
APA	Geng X.,Boufadel M.C.,Lee K.,&An C..(2020).Characterization of Pore Water Flow in 3-D Heterogeneous Permeability Fields.Geophysical Research Letters,47(3).
MLA	Geng X.,et al."Characterization of Pore Water Flow in 3-D Heterogeneous Permeability Fields".Geophysical Research Letters 47.3(2020).