Generation of non-Gaussian statistics and coherent structures in ideal magnetohydrodynamics
Wan, M., Oughton, S., Servidio, S. & Matthaeus, W.H. (2009). Generation of non-Gaussian statistics and coherent structures in ideal magnetohydrodynamics. Physics of Plasmas, 16, 080703
Permanent Research Commons link: https://hdl.handle.net/10289/4251
Spectral method simulations of ideal magnetohydrodynamics are used to investigate production of coherent small scale structures, a feature of fluid models that is usually associated with inertial range signatures of nonuniform dissipation, and the associated emergence of non-Gaussian statistics. The near-identical growth of non-Gaussianity in ideal and nonideal cases suggests that generation of coherent structures and breaking of self-similarity are essentially ideal processes. This has important implications for understanding the origin of intermittency in turbulence.
American Institute of Physics
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