Liquidlike sloshing dynamics of monodisperse granulate

Area of Science:

• Physics
• Materials Science
• Fluid Dynamics

Background:

• Analogies between fluid and granular flows aid continuum treatments of granular media.
• Predicting conditions for fluid-granulate dynamic similarity is challenging, especially for unsteadily driven systems.
• Liquids slosh in oscillating containers, while complex granular particles form convection rolls.

Purpose of the Study:

• To investigate the dynamics of granular media under oscillatory motion.
• To determine if granular materials can exhibit liquidlike behaviors, such as sloshing.
• To understand the influence of particle properties on granular flow dynamics and phase transitions.

Main Methods:

• Experimental setup involving a partially filled container with smooth, monodisperse steel spheres.
• Subjecting the container to horizontal oscillations.
• Observing and analyzing the resulting granular flow dynamics.

Main Results:

• Smooth monodisperse steel spheres demonstrated liquidlike sloshing dynamics.
• This behavior contrasts with the convection rolls observed in granular media with complex particles.
• Particle material and geometry were identified as critical factors influencing system dynamics.

Conclusions:

• Smooth, uniform granular materials can mimic fluid sloshing under specific oscillatory conditions.
• The study highlights the importance of particle characteristics in dictating granular flow behavior.
• Findings contribute to understanding phase transitions and continuum treatments in granular media.