Targeted particle delivery via vortex ring reconnection

TL;DR

This paper introduces a novel method for targeted particle delivery using controlled vortex ring reconnection, which enables precise transport and release of particles via vortex interactions.

Contribution

It presents a conceptual model demonstrating how vortex ring reconnection can be harnessed for efficient targeted particle delivery in fluid flows.

Findings

Vortex reconnection causes topological changes in vortex rings.

Reconnection results in rapid particle transport perpendicular to the flow.

The model explains physics behind vortex-based targeted delivery.

Abstract

A conceptual model for targeted particle delivery is proposed using controlled vortex ring reconnection. Entrained particles can be efficiently transported within the core of the vortex ring which is propelled via self-induction. A pair of these particle-transporting vortices travelling in the streamwise direction along parallel trajectories will mutually interact resulting in vortex reconnection. The reconnection causes a topological change to the vortex rings which is accompanied by a rapid repulsion in a perpendicular plane to the direction of travel; effectively, transporting the particles to the desired delivery site on the sidewalls. This work explains the physics of the process and the considerations for targeted delivery.