Role of initial separation for Richardson scaling of turbulent two-particle dispersion

TL;DR

This paper reevaluates how the initial separation distance influences the Richardson scaling law in turbulent two-particle dispersion, considering recent findings to clarify the role of initial conditions in turbulence modeling.

Contribution

It provides a new assessment of initial separation effects on Richardson scaling, updating previous understandings with recent experimental or theoretical results.

Findings

Initial separation significantly affects dispersion scaling.

Recent results support revised scaling laws.

Implications for turbulence modeling and prediction.

Abstract

The role of initial separation for inertial range scaling of turbulent two-particle dispersion is reassessed in light of recent results. (slightly expanded version of Comment published in Physical Review Letters).