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

Borgman, O, Fantinel, P, Lühder, W, Goehring, L ORCID: https://orcid.org/0000-0002-3858-7295 and Holtzman, R, 2017. Impact of spatially correlated pore-scale heterogeneity on drying porous media. Water Resources Research, 53 (7), pp. 5645-5658. ISSN 0043-1397

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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.

Item Type:	Journal article
Publication Title:	Water Resources Research
Creators:	Borgman, O., Fantinel, P., Lühder, W., Goehring, L. and Holtzman, R.
Publisher:	Wiley-Blackwell
Date:	July 2017
Volume:	53
Number:	7
ISSN:	0043-1397
Identifiers:	Number Type 10.1002/2016WR020260 DOI
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	09 Aug 2017 13:23
Last Modified:	16 Dec 2017 03:00
URI:	https://irep.ntu.ac.uk/id/eprint/31407

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