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26 April 2024 |
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Towards a Simple Model of Compressible Alfvenic Turbulence | | M.V. Medvedev
; P.H. Diamond
; | | Date: |
8 Dec 1996 | | Journal: | Phys. Rev. E 56, R2371-R2374 (1997) | | Subject: | Plasma Physics; Space Physics; Adaptation and Self-Organizing Systems | physics.plasm-ph adap-org astro-ph nlin.AO physics.space-ph | | Abstract: | A simple model collisionless, dissipative, compressible MHD (Alfvenic) turbulence in a magnetized system is investigated. In contrast to more familiar paradigms of turbulence, dissipation arises from Landau damping, enters via nonlinearity, and is distributed over all scales. The theory predicts that two different regimes or phases of turbulence are possible, depending on the ratio of steepening to damping coefficient (m_1/m_2). For strong damping (|m_1/m_2|<1), a regime of smooth, hydrodynamic turbulence is predicted. For |m_1/m_2|>1, steady state turbulence does not exist in the hydrodynamic limit. Rather, spikey, small scale structure is predicted. | | Source: | arXiv, physics/9612005 | | Services: | Forum | Review | PDF | Favorites | |
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