Impact of spatially correlated pore-scale heterogeneity on drying porous media

Oshri Borgman, Paolo Fantinel, Wieland Lühder, Lucas Goehring, Ran Holtzman

Research output: Contribution to journalArticle

10 Citations (Scopus)
10 Downloads (Pure)

Abstract

We study the effect of spatially-correlated heterogeneity on isothermal drying of porous media. We combine a minimal pore-scale model with microfluidic experiments with the same pore geometry. Our simulated drying behavior compares favorably with experiments, considering the large sensitivity of the emergent behavior to the uncertainty associated with even small manufacturing errors. We show that increasing the correlation length in particle sizes promotes preferential drying of clusters of large pores, prolonging liquid connectivity and surface wetness and thus higher drying rates for longer periods. Our findings improve our quantitative understanding of how pore-scale heterogeneity impacts drying, which plays a role in a wide range of processes ranging from fuel cells to curing of paints and cements to global budgets of energy, water and solutes in soils.

Original languageEnglish
Pages (from-to)5645-5658
Number of pages14
JournalWater Resources Research
Volume53
Issue number7
Early online date16 Jun 2017
DOIs
Publication statusPublished - 1 Jul 2017
Externally publishedYes

Fingerprint

porous medium
fuel cell
connectivity
solute
cement
manufacturing
experiment
particle size
drying
geometry
liquid
energy
soil
water

Keywords

  • evaporation
  • immiscible fluid displacement
  • isothermal drying
  • pore-scale heterogeneity
  • porous media
  • spatial correlation

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Impact of spatially correlated pore-scale heterogeneity on drying porous media. / Borgman, Oshri; Fantinel, Paolo; Lühder, Wieland; Goehring, Lucas; Holtzman, Ran.

In: Water Resources Research, Vol. 53, No. 7, 01.07.2017, p. 5645-5658.

Research output: Contribution to journalArticle

Borgman, Oshri ; Fantinel, Paolo ; Lühder, Wieland ; Goehring, Lucas ; Holtzman, Ran. / Impact of spatially correlated pore-scale heterogeneity on drying porous media. In: Water Resources Research. 2017 ; Vol. 53, No. 7. pp. 5645-5658.
@article{46ed67f8d92d42ebb8278ea3547305b9,
title = "Impact of spatially correlated pore-scale heterogeneity on drying porous media",
abstract = "We study the effect of spatially-correlated heterogeneity on isothermal drying of porous media. We combine a minimal pore-scale model with microfluidic experiments with the same pore geometry. Our simulated drying behavior compares favorably with experiments, considering the large sensitivity of the emergent behavior to the uncertainty associated with even small manufacturing errors. We show that increasing the correlation length in particle sizes promotes preferential drying of clusters of large pores, prolonging liquid connectivity and surface wetness and thus higher drying rates for longer periods. Our findings improve our quantitative understanding of how pore-scale heterogeneity impacts drying, which plays a role in a wide range of processes ranging from fuel cells to curing of paints and cements to global budgets of energy, water and solutes in soils.",
keywords = "evaporation, immiscible fluid displacement, isothermal drying, pore-scale heterogeneity, porous media, spatial correlation",
author = "Oshri Borgman and Paolo Fantinel and Wieland L{\"u}hder and Lucas Goehring and Ran Holtzman",
year = "2017",
month = "7",
day = "1",
doi = "10.1002/2016WR020260",
language = "English",
volume = "53",
pages = "5645--5658",
journal = "Water Resources Research",
issn = "0043-1397",
publisher = "American Geophysical Union",
number = "7",

}

TY - JOUR

T1 - Impact of spatially correlated pore-scale heterogeneity on drying porous media

AU - Borgman, Oshri

AU - Fantinel, Paolo

AU - Lühder, Wieland

AU - Goehring, Lucas

AU - Holtzman, Ran

PY - 2017/7/1

Y1 - 2017/7/1

N2 - We study the effect of spatially-correlated heterogeneity on isothermal drying of porous media. We combine a minimal pore-scale model with microfluidic experiments with the same pore geometry. Our simulated drying behavior compares favorably with experiments, considering the large sensitivity of the emergent behavior to the uncertainty associated with even small manufacturing errors. We show that increasing the correlation length in particle sizes promotes preferential drying of clusters of large pores, prolonging liquid connectivity and surface wetness and thus higher drying rates for longer periods. Our findings improve our quantitative understanding of how pore-scale heterogeneity impacts drying, which plays a role in a wide range of processes ranging from fuel cells to curing of paints and cements to global budgets of energy, water and solutes in soils.

AB - We study the effect of spatially-correlated heterogeneity on isothermal drying of porous media. We combine a minimal pore-scale model with microfluidic experiments with the same pore geometry. Our simulated drying behavior compares favorably with experiments, considering the large sensitivity of the emergent behavior to the uncertainty associated with even small manufacturing errors. We show that increasing the correlation length in particle sizes promotes preferential drying of clusters of large pores, prolonging liquid connectivity and surface wetness and thus higher drying rates for longer periods. Our findings improve our quantitative understanding of how pore-scale heterogeneity impacts drying, which plays a role in a wide range of processes ranging from fuel cells to curing of paints and cements to global budgets of energy, water and solutes in soils.

KW - evaporation

KW - immiscible fluid displacement

KW - isothermal drying

KW - pore-scale heterogeneity

KW - porous media

KW - spatial correlation

UR - http://www.scopus.com/inward/record.url?scp=85022193338&partnerID=8YFLogxK

U2 - 10.1002/2016WR020260

DO - 10.1002/2016WR020260

M3 - Article

VL - 53

SP - 5645

EP - 5658

JO - Water Resources Research

JF - Water Resources Research

SN - 0043-1397

IS - 7

ER -