Granular Convection in Microgravity
arXiv:1306.1782 · doi:10.1103/PhysRevLett.110.018307
Abstract
We investigate the role of gravity on convection in a dense granular shear flow. Using a microgravity modified Taylor-Couette shear cell under the conditions of parabolic flight microgravity, we demonstrate experimentally that secondary, convective-like flows in a sheared granular material are close to zero in microgravity and enhanced under high-gravity conditions, though the primary flow fields are unaffected by gravity. We suggest that gravity tunes the frictional particle-particle and particle-wall interactions, which have been proposed to drive the secondary flow. In addition, the degree of plastic deformation increases with increasing gravitational forces, supporting the notion that friction is the ultimate cause.
13 pages, 6 figures
Cited by in corpus (22)
- Energy Dissipation in Driven Granular Matter in the Absence of Gravity
- Local stability conditions and calibrating procedure for new car-following models used in driving simulators
- Role of gravity or confining pressure and contact stiffness in granular rheology
- Culinary fluid mechanics and other currents in food science
- Small Solar System Bodies as granular media
- Spin-driven evolution of asteroids' top-shapes at fast and slow spins seen from (101955) Bennu and (162173) Ryugu
- Quantifying stretching and rearrangement in epithelial sheet migration
- Three-dimensional granular flow continuum modeling via material point method with hyperelastic nonlocal granular fluidity
- Heaping, Secondary Flows and Broken Symmetry in Flows of Elongated Granular Particles
- Timescale of asteroid resurfacing by regolith convection resulting from the impact-induced global seismic shaking
- Simulating regoliths in microgravity
- A gravity-independent powder-based additive manufacturing process tailored for space applications
- Scaling of convective velocity in a vertically vibrated granular bed
- A novel facility for reduced-gravity testing: a set-up for studying low-velocity collisions into granular surfaces
- Monitoring Three-Dimensional Packings in Microgravity
- Asteroid Evolution: Role of Geotechnical Properties
- Granular piston-probing in microgravity: powder compression, from densification to jamming
- Gravity Governs Shear Localization in Confined Dense Granular Flows
- Simulation of Lateral Impulse Induced Inertial Dilation at the Surface of a Vacuum-Exposed Granular Assembly
- Drop tower setup for dynamic light scattering in dense gas-fluidized granular media
- Convective Flows in Sheared Packings of Spherical Particles
- Molecular hints of two-step transition to convective flow via streamline percolation