Static and dynamic fluid-driven fracturing of adhered elastica

Ball, T. V. and Neufeld, J. A. (2018) Static and dynamic fluid-driven fracturing of adhered elastica. Physical Review Fluids, 3. ISSN 2469-990X DOI https://doi.org/10.1103/PhysRevFluids.3.074101

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Abstract

© 2018 American Physical Society. The transient spreading of a viscous fluid beneath an elastic sheet adhered to the substrate is controlled by the dynamics at the tip where the divergence of viscous stresses necessitates the formation of a vapor tip separating the fluid front and fracture front. The model for elastic-plated currents is extended for an axisymmetric geometry with analysis showing that adhesion gives rise to the possibility of static, elastic droplets and to two dynamical regimes of spreading; viscosity dominant spreading controlled by flow of viscous fluid into the vapor tip, and adhesion dominant spreading. Constant flux experiments using clear, PDMS elastic sheets enable new, direct measurements of the vapor tip and confirm the existence of spreading regimes controlled by viscosity and adhesion. The theory and experiments thereby provide an important test coupling the dynamics of flow with elastic deformation and have implications in fluid-driven fracturing of elastic media more generally.

Item Type:	Article
Uncontrolled Keywords:	2018AREP; IA73
Subjects:	02 - Geodynamics, Geophysics and Tectonics
Divisions:	02 - Geodynamics, Geophysics and Tectonics 12 - PhD
Journal or Publication Title:	Physical Review Fluids
Volume:	3
Identification Number:	https://doi.org/10.1103/PhysRevFluids.3.074101
Depositing User:	Sarah Humbert
Date Deposited:	09 Apr 2019 13:33
Last Modified:	09 Apr 2019 13:35
URI:	http://eprints.esc.cam.ac.uk/id/eprint/4443

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