``Superfast'' Reaction in Turbulent Flow with Potential Disorder

TL;DR

This paper investigates the phenomenon of 'superfast' chemical reactions in turbulent flows with potential disorder, confirming its persistence through simulations and advanced renormalization group calculations, highlighting its generality in complex reactive systems.

Contribution

It introduces new renormalization group analysis for dynamic turbulence models, demonstrating the robustness of the superfast reaction regime in more realistic scenarios.

Findings

Superfast reaction regime persists in dynamic turbulence models.

Simulation results align with previous static model predictions.

The regime is a general feature arising from turbulence, reaction kinetics, and potential disorder.

Abstract

We explore the regime of ``superfast'' reactivity that has been predicted to occur in turbulent flow in the presence of potential disorder. Computer simulation studies confirm qualitative features of the previous renormalization group predictions, which were based on a static model of turbulence. New renormalization group calculations for a more realistic, dynamic model of turbulence show that the superfast regime persists. This regime, with concentration decay exponents greater than that for a well-mixed reaction, appears to be a general result of the interplay among non-linear reaction kinetics, turbulent transport, and local trapping by potential disorder.