Fully Kinetic versus Reduced-kinetic Modeling of Collisionless Plasma Turbulence
نویسندگان
چکیده
منابع مشابه
Nonlinear Modeling of Kinetic Plasma
Many kinetic plasma instabilities, in quite di erent physical systems, share a genuinely similar mathematical structure near isolated phase-space islands. For this reason, dynamical features such as faster-than-exponential growth of the instability, as well as nonlinear frequency sweeping, are found to be universal. Numerical f methods, which follow the evolution of the (nonlinear) perturbed di...
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Collisionless plasma expansion is a fundamental physics problem in plasma science and has great impacts on engineering applications, such as fusion and electric propulsion. Though much more computationally expensive, the kinetic approaches are required for both electrons and ions in order to accurately solve the collisionless plasma problems. The gridbased direct kinetic simulation code with GP...
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The kinetic evolution of the Orszag–Tang vortex is studied using collisionless hybrid simulations. In magnetohydrodynamics MHD this configuration leads rapidly to broadband turbulence. At large length scales, the evolution of the hybrid simulations is very similar to MHD, with magnetic power spectra displaying scaling similar to a Kolmogorov scaling of 5/3. At small scales, differences from MHD...
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A fully kinetic Vlasov simulation of the Geospace Environment Modeling (GEM) Magnetic Reconnection Challenge is presented. Good agreement is found with previous kinetic simulations using particle in cell (PIC) codes, confirming both the PIC and the Vlasov code. In the latter the complete distribution functions fk (k = i, e) are discretised on a numerical grid in phase space. In contrast to PIC ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2017
ISSN: 1538-4357
DOI: 10.3847/1538-4357/aa894d