Nested polyhedra model of isotropic magnetohydrodynamic turbulence
Related Experiment Video
Updated: Feb 7, 2026

Author Spotlight: Exploring Microglial Interactions with Stress-Response Circuitry Using the Limited Bedding and Nesting Model
Published on: July 12, 2024
1CNRS, Laboratoire de Physique des Plasmas, Ecole Polytechnique, 91128 Palaiseau, France and Sorbonne Universités, UPMC Univ Paris 06, Paris, France.
Abstract:
A nested polyhedra model has been developed for magnetohydrodynamic turbulence. Driving only the velocity field at large scales with random, divergence-free forcing results in a clear, stationary k^{-5/3} spectrum for both kinetic and magnetic energies. Since the model naturally effaces disparate scale interactions, does not have a guide field, and avoids injecting any sign of helicity by random forcing, the resulting three-dimensional k spectrum is statistically isotropic. The strengths and weaknesses of the model are demonstrated by considering large or small magnetic Prandtl numbers. It was also observed that the timescale for the equipartition offset with those of the smallest scales shows a k^{-1/2} scaling.
Related Concept Videos
Laminar and Turbulent Flow
Turbulent Flow
Turbulent Flow: Problem Solving
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures enhance...
Molecular Models
The Bohr Model
Stereotype Content Model

