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Avalanches in strong imbibition

Abstract:
Slow injection of non-wetting fluids (drainage) and strongly wetting fluids (strong imbibition) into porous media are two contrasting processes in many respects: the former must be forced into the pore space, while the latter imbibe spontaneously; the former occupy pore bodies, while the latter coat crevices and corners. These two processes also produce distinctly different displacement patterns. However, both processes evolve via a series of avalanche-like invasion events punctuated by quiescent periods. Here, we show that, despite their mechanistic differences, avalanches in strong imbibition exhibit all the features of self-organized criticality previously documented for drainage, including the correlation scaling describing the space-time statistics of invasion at the pore scale.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/s42005-022-00826-1

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
University College
Role:
Author
ORCID:
0000-0002-8280-0743


Publisher:
Springer Nature
Journal:
Communications Physics More from this journal
Volume:
5
Article number:
52
Publication date:
2022-03-11
Acceptance date:
2022-02-04
DOI:
EISSN:
2399-3650


Language:
English
Keywords:
Pubs id:
1232196
Local pid:
pubs:1232196
Deposit date:
2022-01-15

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