Stirring Speeds Up Chemical Reaction

TL;DR

This paper investigates how fluid flow influences chemical reactions, demonstrating that enhanced dissipation and reaction coupling determine the reaction's time scale in advection-reaction-diffusion systems.

Contribution

It introduces a framework linking fluid flow-induced dissipation to reaction dynamics, highlighting the role of enhanced dissipation in reaction time scales.

Findings

Enhanced dissipation shortens reaction time scales.

Reaction coupling strength impacts overall reaction speed.

Fluid flow can accelerate chemical reactions through dissipation.

Abstract

We consider absorbing chemical reactions in a fluid flow modeled by the coupled advection-reaction-diffusion equations. In these systems, the interplay between chemical diffusion and fluid transportation causes the enhanced dissipation phenomenon. We show that the enhanced dissipation time scale, together with the reaction coupling strength, determines the characteristic time scale of the reaction.