Towards Synthetic Magnetic Turbulence with Coherent Structures
arXiv:2401.10573 · doi:10.1209/0295-5075/ad438f
Abstract
Synthetic turbulence is a relevant tool to study complex astrophysical and space plasma environments inaccessible by direct simulation. However, conventional models lack intermittent coherent structures, which are essential in realistic turbulence. We present a novel method, featuring coherent structures, conditional structure function scaling and fieldline curvature statistics comparable to magnetohydrodynamic turbulence. Enhanced transport of charged particles is investigated as well. This method presents significant progress towards physically faithful synthetic turbulence.
7 pages, 5 figures. Accepted for publication in Europhysics Letters (EPL). Fixed small error in Fig. 5. The pseudocode listing is provided as an ancillary file
References in corpus (26)
- Simulations of small-scale turbulent dynamo
- Spectral energy dynamics in magnetohydrodynamic turbulence
- Magnetic fields in the Large-Scale Structure of the Universe
- The Generation of Magnetic Fields Through Driven Turbulence
- A comprehensive comparison of relativistic particle integrators
- New constraints on modelling the random magnetic field of the MW
- Local Anisotropy, Higher Order Statistics, and Turbulence Spectra
- Novel aspects of cosmic ray diffusion in synthetic magnetic turbulence
- Charged particle diffusion in isotropic random magnetic fields
- Cosmic Rays in Intermittent Magnetic Fields
- Cosmic ray transport in large-amplitude turbulence with small-scale field reversals
- Synthetic Lagrangian Turbulence by Generative Diffusion Models
- Measures of Three-Dimensional Anisotropy and Intermittency in Strong Alfvénic Turbulence
- A dissipative random velocity field for fully developed fluid turbulence
- Test particle simulations of cosmic rays
- Curvature of magnetic field lines in compressible magnetized turbulence: Statistics, magnetization predictions, gradient curvature, modes and self-gravitating media
- Simulating Heliospheric and Solar Particle Diffusion using the Parker Spiral Geometry
- Interpolation of turbulent magnetic fields and its consequences on diffusive cosmic ray propagation
- Statistical model for filamentary structures of molecular clouds -- The modified multiplicative random cascade model and its multifractal nature
- The statistical geometry of material loops in turbulence
- Subion Scale Turbulence Driven by Magnetic Reconnection
- Origin of Multifractality in Solar Wind Turbulence: the Role of Current Sheets
- A fast algorithm for a three-dimensional synthetic model of intermittent turbulence
- Magnetic fields from Multiplicative Chaos
- Stochastic interpolation of sparsely sampled time series by a superstatistical random process and its synthesis in Fourier and wavelet space
- Continuous cascades in the wavelet space as models for synthetic turbulence
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- BxC Toolkit: Generating Tailored Turbulent 3D Magnetic Fields
- Strong turbulence and magnetic coherent structures in the interstellar medium
- A spatio-temporal random synthetic turbulent velocity field: The underlying Gaussian structure
- Multiscale Turbulence Synthesis: Validation in 2D Hydrodynamics
- Modelling cosmic-ray transport: magnetised versus unmagnetised motion in astrophysical magnetic turbulence
- Synthetic Turbulence via an Instanton Gas Approximation