Activity induced turbulence in driven active matter
Soft Condensed Matter
2021-09-16 v1 Statistical Mechanics
Chaotic Dynamics
Fluid Dynamics
Abstract
Turbulence in driven stratified active matter is considered. The relevant parameters characterizing the problem are the Reynolds number Re and an active matter Richardson-like number,R. In the mixing limit,Re>>1, R<<1, we show that the standard Kolmogorov energy spectrum 5/3 law is realized. On the other hand, in the stratified limit, Re>>1,R>>1, there is a new turbulence universality class with a 7/5 law. The crossover from one regime to the other is discussed in detail. Experimental predictions and probes are also discussed.
Keywords
Cite
@article{arxiv.2109.06934,
title = {Activity induced turbulence in driven active matter},
author = {J. K. Bhattacharjee and T. R. Kirkpatrick},
journal= {arXiv preprint arXiv:2109.06934},
year = {2021}
}