DOI: 10.1002/2015GL065423
论文题名: Continuum-scale characterization of solute transport based on pore-scale velocity distributions
作者: Porta G.M. ; Bijeljic B. ; Blunt M.J. ; Guadagnini A.
刊名: Geophysical Research Letters
ISSN: 0094-9538
EISSN: 1944-9269
出版年: 2015
卷: 42, 期: 18 起始页码: 7537
结束页码: 7545
语种: 英语
英文关键词: double continuum
; pore-scale flow
; porous media
; solute transport
; upscaling
Scopus关键词: Porous materials
; Solute transport
; Velocity
; Double continuum
; Internal structure
; Pore scale
; Pore-scale simulation
; Scale characterization
; Solute concentrations
; Three-dimensional pores
; Upscaling
; Velocity distribution
; calibration
; concentration (composition)
; conceptual framework
; continuum damage mechanics
; model validation
; pore space
; porous medium
; solute transport
; three-dimensional modeling
; upscaling
英文摘要: We present a methodology to characterize a continuum-scale model of transport in porous media on the basis of pore-scale distributions of velocities computed in three-dimensional pore-space images. The methodology is tested against pore-scale simulations of flow and transport for a bead pack and a sandstone sample. We employ a double-continuum approach to describe transport in mobile and immobile regions. Model parameters are characterized through inputs resulting from the micron-scale reconstruction of the pore space geometry and the related velocity field. We employ the outputs of pore-scale analysis to (i) quantify the proportion of mobile and immobile fluid regions and (ii) assign the velocity distribution in an effective representation of the medium internal structure. Our results (1) show that this simple conceptual model reproduces the spatial profiles of solute concentration rendered by pore-scale simulation without resorting to model calibration and (2) highlight the critical role of pore-scale velocities in the characterization of the model parameters. © 2015 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945456057&doi=10.1002%2f2015GL065423&partnerID=40&md5=7644ff28155161c73ef1b7ed8d1bf64d
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9153
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Dipartimento di Ingegneria Civile e Ambientale, Politecnico di Milano, Milan, Italy
Recommended Citation:
Porta G.M.,Bijeljic B.,Blunt M.J.,et al. Continuum-scale characterization of solute transport based on pore-scale velocity distributions[J]. Geophysical Research Letters,2015-01-01,42(18).