Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session M09: Emerging Trends in Soft Microscale Mechanics I
8:00 AM–11:00 AM,
Wednesday, March 8, 2023
Room: Room 132
Sponsoring
Unit:
DSOFT
Chair: Rae Robertson-Anderson, University San Diego
Abstract: M09.00010 : Optimum viscosity reduction by cruising in dense suspensions.
10:12 AM–10:24 AM
Presenter:
Pappu Acharya
(Lund University)
Author:
Pappu Acharya
(Lund University)
protocols can reduce viscosity and dissipation. Furthermore, oscillations can even unjam shear-jammed suspensions. In this numerical
work, we ask ourselves what is the optimum shear protocol in terms of dissipation. We show that the cruising protocol is better than an
oscillatory shear applied in the perpendicular direction, even though the latter's viscosity reduction is more considerable. Ultimately, we
give a simple geometrical interpretation of this counter-intuitive decoupling of minima of viscosity and dissipation for the cruising protocol.
This work paves the way for a new class of highly-energy efficient shear/mass-transport protocol.
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