Statistics of magnetic reconnection in two-dimensional magnetohydrodynamic turbulence

Servidio, S.; Matthaeus, W. H.; Shay, M. A.; Dmitruk, P.; Cassak, P. A.; Wan, M.
March 2010
Physics of Plasmas;Mar2010, Vol. 17 Issue 3, p032315
Academic Journal
The nonlinear dynamics of magnetic reconnection in turbulence is investigated through direct numerical simulations of decaying, incompressible, two-dimensional magnetohydrodynamics. Recently, it was shown by Servidio et al. [Phys. Rev. Lett. 102, 115003 (2009)] that in fully developed turbulence complex processes of reconnection occur locally. Here, the main statistical features of these multiscale reconnection events are further described, providing details on the methodology. It is found that is possible to describe the reconnection process in turbulence as a generalized local Sweet–Parker process in which the parameters are locally controlled by the turbulence cascade, thus providing a step toward reconciling classical turbulence analysis with reconnection theory. This general description of reconnection may be useful for laboratory and space plasmas, where the presence of turbulence plays a crucial role.


Related Articles

  • Magnetohydrodynamic simulations of turbulent magnetic reconnection. Fan, Quan-Lin; Feng, Xue-Shang; Xiang, Chang-Qing // Physics of Plasmas;Dec2004, Vol. 11 Issue 12, p5605 

    Turbulent reconnection process in a one-dimensional current sheet is investigated by means of a two-dimensional compressible one-fluid magnetohydrodynamic simulation with spatially uniform, fixed resistivity. Turbulence is set up by adding to the sheet pinch small but finite level of broadband...

  • Spectral scaling in the turbulent Earth's plasma sheet revisited. Vörös, Z.; Baumjohann, W.; Nakamura, R.; Runov, A.; Volwerk, M.; Asano, Y.; Jankovičová, D.; Lucek, E. A.; Rème, H. // Nonlinear Processes in Geophysics;2007, Vol. 14 Issue 4, p535 

    Bursty bulk flow associated magnetic fluctuations exhibit at least three spectral scaling ranges in the Earth's plasma sheet. Two of the three scaling ranges can be associated with multi-scale magnetohydrodynamic turbulence between the spatial scales from ~100 km to several RE (RE is the Earth's...

  • Properties of magnetic reconnection in MHD turbulence. Servidio, S.; Shay, M. A.; Matthaeus, W. H.; Dmitruk, P.; Cassak, P. A.; Wan, M. // AIP Conference Proceedings;3/25/2010, Vol. 1216 Issue 1, p198 

    Numerical simulations of two-dimensional Magnetohydrodynamic (2D MHD) turbulence reveal the presence of a huge number of sites where magnetic reconnection locally occurs. The properties of this ensemble of reconnection events, that are spontaneously generated by turbulence, have been studied....

  • Primary instability mechanisms on the magnetohydrodynamic boundary layer flow over a rotating disk subject to a uniform radial flow. Turkyilmazoglu, M. // Physics of Fluids;Jul2009, Vol. 21 Issue 7, p074103 

    This paper is devoted to the investigation of three primary linear instability mechanisms due to the resonating disturbance waves present in the three-dimensional incompressible viscous/inviscid rotating disk boundary layer flow, extending our earlier still outer fluid work [M. Turkyilmazoglu,...

  • Smagorinsky constant in LES modeling of anisotropic MHD turbulence. Vorobev, Anatoliy; Zikanov, Oleg // Theoretical & Computational Fluid Dynamics;May2008, Vol. 22 Issue 3/4, p317 

    Turbulent fluctuations in magnetohydrodynamic (MHD) flows can become strongly anisotropic or even quasi-2D under the action of an applied magnetic field. We investigate this phenomenon in the case of low magnetic Reynolds numbers. It has been found in earlier DNS and LES of homogeneous...

  • Three-dimensional magnetic reconnection through a moving magnetic null. Lukin, V. S.; Linton, M. G. // Nonlinear Processes in Geophysics;2011, Vol. 18 Issue 6, p871 

    A computational study of three-dimensional magnetic reconnection between two flux ropes through a moving reconnection site is presented. The configuration is considered in the context of two interacting spheromaks constrained by a perfectly conducting cylindrical boundary and oriented to form a...

  • The appearance, motion, and disappearance of three-dimensional magnetic null points. Murphy, Nicholas A.; Parnell, Clare E.; Haynes, Andrew L. // Physics of Plasmas;2015, Vol. 22 Issue 10, p1 

    While theoretical models and simulations of magnetic reconnection often assume symmetry such that the magnetic null point when present is co-located with a flow stagnation point, the introduction of asymmetry typically leads to non-ideal flows across the null point. To understand this behavior,...

  • Singular structure of magnetic islands resulting from reconnection. Jemella, B. D.; Drake, J. F.; Shay, M. A. // Physics of Plasmas;Dec2004, Vol. 11 Issue 12, p5668 

    Magnetic island equilibria resulting from reconnection in magnetohydrodynamic (MHD) simulations are explored in a two-dimensional slab geometry. Magnetic islands are evolved to finite amplitude with a nonzero resistivity. The resistivity and flows are then set to zero and the system is allowed...

  • Reconnection Diffusion in Turbulent Fluids and Its Implications for Star Formation. Lazarian, A. // Space Science Reviews;May2014, Vol. 181 Issue 1-4, p1 

    Astrophysical fluids are turbulent a fact which changes the dynamics of many key processes, including magnetic reconnection. Fast reconnection of magnetic field in turbulent fluids allows the field to change its topology and connections. As a result, the traditional concept of magnetic fields...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics