# Sustained turbulence and magnetic energy in non-rotating shear flows

## TL;DR

This paper demonstrates through simulations that non-rotating MHD shear flows can become turbulent due to finite amplitude perturbations, sustaining magnetic energy and large-scale magnetic fields independently of the initial driving mechanism.

## Contribution

It provides evidence that sustained magnetic energy in turbulence does not depend on the specific driving mechanism at high magnetic Reynolds numbers.

## Key findings

- Non-rotating shear flows become turbulent with finite amplitude perturbations.
- Turbulence leads to growth and maintenance of magnetic energy.
- Large-scale magnetic fields can be sustained in these flows.

## Abstract

From numerical simulations, we show that non-rotating magnetohydrodynamic shear flows are unstable to finite amplitude velocity perturbations and become turbulent, leading to the growth and sustenance of magnetic energy, including large scale fields. This supports the concept that sustained magnetic energy from turbulence is independent of the driving mechanism for large enough magnetic Reynolds numbers.