Journal
PHYSICAL REVIEW RESEARCH
Volume 5, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.5.043015
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This study uses theory and simulation to investigate the coupled processes of drainage in porous media. The researchers identify two distinct drainage behaviors and quantitatively determine the conditions under which they occur. The findings expand the current understanding of these processes and have implications for the application of drainage in various industries and environmental contexts.
Drainage, in which a nonwetting fluid displaces a wetting fluid from a porous medium, is well studied for media with unchanging solid surfaces. However, many media can be eroded by drainage, with eroded material redeposited in pores downstream, altering further flow. Here we use theory and simulation to examine how these coupled processes both alter the overall fluid displacement pathway and help reshape the solid medium. We find two drainage behaviors with markedly different characteristics and quantitatively delineate the conditions under which they arise. Our results thereby help expand the current understanding of these rich physics, with implications for applications of drainage in industry and the environment.
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