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Abstract
We investigate the spectral properties of plasma turbulence from fluid to sub-ion scales by means of high-resolution three-dimensional (3D) numerical simulations performed with the hybrid particle- in-cell (HPIC) code CAMELIA. We produce extended turbulent spectra with well-defined power laws for the magnetic, ion bulk velocity, density, and electric fluctuations. The present results are in good agreement with previous two-dimensional (2D) HPIC simulations, especially in the kinetic range of scales, and reproduce several features observed in solar wind spectra. By providing scaling tests on many different architectures and convergence studies, we prove CAMELIA to represent a very efficient, accurate and reliable tool for investigating the development of the turbulent cascade in the solar wind, being able to cover simultaneously several decades in wavenumber, also in 3D.
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Details
1 Dipartimento di Fisica e Astronomia, Università degli Studi di Firenze, Firenze, Italy; School of Physics and Astronomy, Queen Mary University of London, London, UK
2 Astronomical Institute, CAS, Prague, Czech Republic
3 SuperComputing Applications and Innovation Department, CINECA, Bologna, Italy
4 School of Physics and Astronomy, Queen Mary University of London, London, UK
5 Dipartimento di Fisica e Astronomia, Università degli Studi di Firenze, Firenze, Italy
6 LESIA-Observatoire de Paris, Meudon, France
7 Dipartimento di Fisica e Astronomia, Università degli Studi di Firenze, Firenze, Italy; INAF - Osservatorio Astrofisico di Arcetri, Firenze, Italy