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

16 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

Keywords

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

ASJC Scopus subject areas

  • Water Science and Technology

Fingerprint Dive into the research topics of 'Impact of spatially correlated pore-scale heterogeneity on drying porous media'. Together they form a unique fingerprint.

Cite this