Logistic map and micro-structure of isotropic turbulent flow

TL;DR

This paper introduces a simplified dynamical system model based on the logistic map to study isotropic turbulence, capturing key features like multifractal cascade and intermittency, thus offering new insights into turbulence phenomena.

Contribution

It demonstrates that simple dynamical systems can replicate complex turbulence features, broadening the application of chaos theory to turbulence modeling.

Findings

Reproduces multifractal cascade in turbulence

Captures intermittency phenomena

Shows simplified models can mimic complex turbulence features

Abstract

ONE of the main goals in the development of theory of chaotic dynamical system has been to make progress in understanding of turbulence. The attempts to related turbulence to chaotic motion got strong impetus from the celebrated paper by Ruelle and Takens . Considerable success has been achieved mainly in the area: the onset of turbulence. For fully developed turbulence, many questions remain unanswered. The aim of this letter is to show that there are dynamical systems that are much simpler than the Navier-Stokes equations but that can still have turbulent states and for which many concepts developed in the theory of dynamical systems can be successfully applied. In this connection we advocate a broader use of the universal properties of a wide range of isotropic turbulence phenomena. Even for the case of fully developed turbulence, which contains an extreme range of relevant length scales, it is possible, by using the present model, to reproduce a surprising variety of relevant features, such as multifractal cascade, intermittency. This letter reverts to possible applications of the Navier-Stokes equations to studies of the nature of turbulence.