Computations of Intermittent Transport in Scrape-Off Layer Plasmas
作者： O. E. Garcia , V. Naulin , A. H. Nielsen , J. Juul Rasmussen
DOI: 10.1103/PHYSREVLETT.92.165003
关键词: Torpex 、 Computation 、 Probability distribution 、 Mechanics 、 Turbulence 、 Physics 、 Classical mechanics 、 Speed of sound 、 Magnetic field 、 Layer (electronics) 、 Plasma 、 General Physics and Astronomy
摘要: Two-dimensional fluid simulations of interchange turbulence for geometry and parameters relevant the scrape-off layer magnetized plasmas are presented. The computations, which have distinct plasma production loss regions, reveal bursty ejection particles heat from bulk in form blobs. These structures propagate far into where they dissipated due to transport along open magnetic field lines. From single-point recordings it is shown that blobs asymmetric conditional wave forms lead positively skewed flattened probability distribution functions. radial propagation velocity may reach one-tenth sound speed. results excellent agreement with recent experimental measurements.
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