Fluid motion for reducing the bounce of partially filled containers

TL;DR

This study demonstrates that controlling fluid distribution inside partially filled containers through rotation can significantly reduce bounce, with experiments and high-speed imaging revealing the underlying fluid dynamics.

Contribution

The paper introduces a novel method using rotation to manipulate internal fluid distribution, effectively reducing bounce in partially filled containers.

Findings

Rotation controls fluid distribution effectively.

Fluid dynamics processes influence bounce behavior.

Model captures experimental fluid motion and bounce reduction.

Abstract

Certain spatial distributions of water inside partially filled containers can significantly reduce the bounce of the container. In experiments with containers filled to a volume fraction $\phi$, we show that rotation offers control and high efficiency in setting such distributions and, consequently, in altering bounce markedly. High-speed imaging evidences the physics of the phenomenon and reveals a rich sequence of fluid-dynamics processes, which we translate into a model that captures our overall experimental findings.