Cavitation in a soft porous material
Name
pgac150.pdf
Description
Published version
Size
1.19 MB
Format
Adobe PDF
Checksum (MD5)
4c5405ee292ea3ad03074835b5db07a3
Author(s)
Leng, Yu
Vlachos, Pavlos P
Juanes, Ruben
Gomez, Hector
Date Issued
2022
Journal
PNAS Nexus
Publisher
Oxford University Press (OUP)
Citation
Leng, Yu, Vlachos, Pavlos P, Juanes, Ruben and Gomez, Hector. 2022. "Cavitation in a soft porous material." PNAS Nexus, 1 (4).
Version
Final published version
Abstract
Abstract
We study the collapse and expansion of a cavitation bubble in a deformable porous medium. We develop a continuum-scale model that couples compressible fluid flow in the pore network with the elastic response of a solid skeleton. Under the assumption of spherical symmetry, our model can be reduced to an ordinary differential equation that extends the Rayleigh–Plesset equation to bubbles in soft porous media. The extended Rayleigh–Plesset equation reveals that finite-size effects lead to the breakdown of the universal scaling relation between bubble radius and time that holds in the infinite-size limit. Our data indicate that the deformability of the porous medium slows down the collapse and expansion processes, a result with important consequences for wide-ranging phenomena, from drug delivery to spore dispersion.
We study the collapse and expansion of a cavitation bubble in a deformable porous medium. We develop a continuum-scale model that couples compressible fluid flow in the pore network with the elastic response of a solid skeleton. Under the assumption of spherical symmetry, our model can be reduced to an ordinary differential equation that extends the Rayleigh–Plesset equation to bubbles in soft porous media. The extended Rayleigh–Plesset equation reveals that finite-size effects lead to the breakdown of the universal scaling relation between bubble radius and time that holds in the infinite-size limit. Our data indicate that the deformability of the porous medium slows down the collapse and expansion processes, a result with important consequences for wide-ranging phenomena, from drug delivery to spore dispersion.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1093/PNASNEXUS/PGAC150
