Description
Energy Transfer and Dissipation in Plasma Turbulence , 1st ed. 2019
From Compressible MHD to Collisionless Plasma
Springer Theses Series
Author: Yang Yan
Language: EnglishSubjects for Energy Transfer and Dissipation in Plasma Turbulence :
Publication date: 05-2019
Support: Print on demand
Support: Print on demand
Description
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This book revisits the long-standing puzzle of cross-scale energy transfer and dissipation in plasma turbulence and introduces new perspectives based on both magnetohydrodynamic (MHD) and Vlasov models. The classical energy cascade scenario is key in explaining the heating of corona and solar wind. By employing a high-resolution hybrid (compact finite difference & WENO) scheme, the book studies the features of compressible MHD cascade in detail, for example, in order to approximate a real plasma cascade as ?Kolmogorov-like? and to understand features that go beyond the usual simplified theories based on incompressible models. When approaching kinetic scales where plasma effects must be considered, it uses an elementary analysis of the Vlasov?Maxwell equations to help identify the channels through which energy transfer must be dissipated. In addition, it shows that the pressure?strain interaction is of great significance in producing internal energy. This analysis, in contrast to many other recent studies, does not make assumptions about wave-modes, instability or other specific mechanisms responsible for the dynamics ? the results are direct consequences of the Vlasov?Maxwell system of equations. This is an important step toward understanding dissipation in turbulent collisionless plasma in space and astrophysics.
Introduction.- Elements of Plasma Physics.- Numerical Algorithm for Compressible Magnetohydrodynamic Turbulence.- Energy Cascade in Compressible Magnetohydrodynamic Turbulence.- Energy Transfer and Dissipation in Collisionless Plasma Turbulence.- Discussion and Conclusions.
Yan Yang
Doctor of Natural Science, Peking University
Nominated by Peking University as an outstanding Ph.D. thesis
Presents a systematic study on energy transfer and dissipation spanning from macroscopic fluid flow to kinetic scales
Discusses dissipation in turbulent collisionless plasma in space and astrophysics
© 2024 LAVOISIER S.A.S.
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