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Simulating Space Plasmas in the Lab: Levitated Rings and Interchange Dynamics

Simulating Space Plasmas in the Lab: Levitated Rings and Interchange Dynamics

Paperback

General Education

ISBN10: 3384285867
ISBN13: 9783384285867
Publisher: Tredition Gmbh
Published: Jul 10 2024
Pages: 102
Weight: 0.35
Height: 0.24 Width: 6.00 Depth: 9.00
Language: English
Intermittency is a defining characteristic of turbulence, and can be described as the nonuni-form distriubtion of eddy formations in a stream [55]. Spatial intermittency occurs when turbulent eddies are generated over a wide range of scales but do not fill the fluid volume, only irregu-lar sub-volumes [56]; this is associated with sharp gradients and coherent structures. Temporal intermittency occurs when fluctuations appear as bursts in time with varying durations and is characteristic of the turbulent cascade. Matthaeus and co-authors review the properties of spatial and temporal intermittency in both fluids and plasmas [57]. Intermittency is related to nonlinear phase-space structures called holes and clumps which were originally found in electrostatic turbulence simulations [58, 59]. Temporal intermittency has been associated with the inverse cas-cade of two-dimensional turbulence, as described in Section 1.3.

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General Education