Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session K18: Fluids VI
3:00 PM–6:00 PM,
Tuesday, March 7, 2023
Room: Room 210
Sponsoring
Unit:
DFD
Chair: Lei Fang, University of Pittsburgh
Abstract: K18.00002 : And yet it clogs: bridging of suspensions in constricted channels
3:12 PM–3:24 PM
Presenter:
Alban Sauret
(UC Santa Barbara)
Authors:
Alban Sauret
(UC Santa Barbara)
Nathan Vani
(University of California, Santa Barbara)
Sacha Escudier
(University of California, Santa Barbara)
Deok-Hoon Jeong
(University of California, Santa Barbara)
In this study, we consider the clogging by bridging, i.e., through the formation of a stable arch of particles at a constriction that hinders the transport of particles downstream of the clog. We characterize the role of the volume fraction of particles and of the constriction size on the lifetime of 3D-printed millifluidic devices. Our results show that for small enough constriction and for any solid fraction of particles, the clogging of the system appears to be a matter of when rather than of if. We rationalize our results using a stochastic approach that provides guidelines to avoid clogging by bridging in constricted channels. We also report design and operating guidelines that contribute to delaying clogging in fluidic systems, thus improving the reliability of many engineering systems.
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