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A two-fluid helicity transport model for flux-rope merging

机译:助焊剂-液流合并的两流体螺旋传输模型

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摘要

A two-fluid model for canonical helicity transport between merging flux-ropes is developed. Relative canonical helicity is defined here as the gauge invariant helicity of the canonical momentum of a given species, and represents the generalization of helicity to magnetized plasmas with non-negligible momentum. The model provides the conditions for when the transport of canonical helicity during merging manifests itself as magnetic helicity transfer or as generation of strong helical plasma flows. The model is applied to compact torus merging but is also relevant to situations where magnetic flux-ropes and flow vorticity flux-ropes interact. Geometrical interpretations are given.
机译:建立了两种流体在融合磁通-绳之间的规范螺旋传输的模型。相对规范螺旋度在此定义为给定物种规范动量的规范不变螺旋度,代表了对具有不可忽略动量的磁化等离子体的螺旋度的一般化。该模型为合并过程中规范螺旋的传输表现为磁螺旋传输或强螺旋等离子体流的生成提供了条件。该模型适用于紧凑的圆环合并,但也与磁通量-磁极流和流动涡度-磁通量-磁极相互作用的情况有关。给出了几何解释。

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