Characterizing Dissipation in Fluid-Fluid Displacement Using Constant-Rate Spontaneous Imbibition
Name
PhysRevLett.125.174503.pdf
Description
Published version
Size
1.32 MB
Format
Adobe PDF
Checksum (MD5)
03f866caeef110fdf7e2401da4980f0d
Author(s)
Primkulov, BK
Chui, JYY
Pahlavan, AA
MacMinn, CW
Juanes, R
Date Issued
October 2020
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Characterizing Dissipation in Fluid-Fluid Displacement Using Constant-Rate Spontaneous Imbibition
B. K. Primkulov, J. Y. Y. Chui, A. A. Pahlavan, C. W. MacMinn, and R. Juanes
Phys. Rev. Lett. 125, 174503 © 2020 American Physical Society.
Version
Final published version
Abstract
When one fluid displaces another in a confined environment, some energy is dissipated in the fluid bulk and the rest is dissipated near the contact line. Here we study the relative strengths of these two sources of dissipation with a novel experimental setup: constant-rate spontaneous imbibition experiments, achieved by introducing a viscous oil slug in front of the invading fluid inside a capillary tube. We show that a large fraction of dissipation can take place near the contact line, and rationalize the observations by means of a theoretical analysis of the dynamic contact angles of the front and back menisci of the oil slug. Our results bear important implications for macroscopic descriptions of multiphase flows in microfluidic systems and porous media.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
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DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.125.174503
