Skimming transition in flexible granular sweeping
Y. Ochi, H. Katsuragi
Abstract
A flexible body placed in a steady flow bends to reduce drag. This self-streamlining is a hallmark of fluid-structure interaction (FSI). Granular-structure interaction is equally ubiquitous in nature. However, it remains poorly understood. Thus, we investigate inertial granular-structure interaction (IGSI). Specifically, ejection induced by a flexible plate sweeping a granular bed is experimentally examined. We find that a faster sweep results in less ejection, particularly for a flexible plate. To understand the underlying physics of this behavior, a dimensionless number Sk is introduced as the ratio of the plate elastic timescale to the sweep timescale. At Sk 1, the plate deflection follows the self-streamlining law of FSI and induces substantial ejection. At Sk 1, on the other hand, the plate skims the bed and the mass of ejected grains decreases sharply. Sk organizes IGSI as the granular counterpart of FSI.
Create a lesson
Related papers
Geometry-Controlled Relaxation Spectra in Viscoelastic Fluids
Niloyendu Roy, Rupayan Saha, Debankur Das et al.
Dense HeLa cell monolayers remain liquid-like despite strong crowding
Suravi Pal, Nen Saito, Takeshi Kawasaki et al.
Transport of Deformable Vesicles Driven by Chiral Active Brownian Particles
Dipak Patra, Anil Kumar Dasanna
Conformational landscape of a macrocycle from REST enhanced sampling
Valentin Kasper, Nicole Holzmann, Sanjoy Ray et al.
Prediction of the maximum penetration of a circular intruder in a two-dimensional granular bed from its early trajectory using Machine Learning
Patricia Altshuler
Odd slip at chiral active surfaces
Yuto Hosaka, Andrej Vilfan