Bulletin of the American Physical Society
72nd Annual Meeting of the APS Division of Fluid Dynamics
Volume 64, Number 13
Saturday–Tuesday, November 23–26, 2019; Seattle, Washington
Session J01: Invited Talk: Impact of Wettability on Multiphase Flow and Granular Mechanics: Experiments, Modeling and Theory |
Hide Abstracts |
Chair: Gareth McKinley, MIT Room: 6b |
Monday, November 25, 2019 11:00AM - 11:35AM |
J01.00001: Impact of Wettability on Multiphase Flow and Granular Mechanics: Experiments, Modeling and Theory Invited Speaker: Ruben Juanes Many natural subsurface processes involve the interaction between multiphase flow and deformation of porous media like rocks and soils. Examples include hydraulic fracturing, induced seismicity from fluid injection, and subsidence from groundwater extraction, just to name a few. In some cases, such as soil desiccation cracks or methane venting from organic sediments, surface tension plays a fundamental role in the fluid-solid interaction. Here, we report some recent observations on how, in these cases, the flow and deformation are strongly modulated by wettability, that is, the relative affinity of each fluid to the solid making up the porous medium. These observations are surprising and intriguing, but a mechanistic explanation has heretofore remained elusive. Here, we present a fully-coupled dynamic model of granular mechanics and multiphase flow at the pore scale, which explicitly incorporates the impact of wettability. This mechanistic model allows us to explore the rich emerging behavior as a function of different parameters, such as capillary number, contact angle, initial packing density, and grain rigidity. Beyond the suggestive predictions of pattern formation, the model also hints at the origin of the transitions between patterns. We reconcile the rich behavior we observe in terms of a jamming transition, which opens a promising way to understand novel aspects of wet granular systems. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700