dorsal/arxiv
View SchemaCondensation of microturbulence-generated shear flows into global modes
| Authors | K. Hallatschek |
|---|---|
| Categories | |
| ArXiv ID | physics/0002004 |
| URL | https://arxiv.org/abs/physics/0002004 |
| DOI | 10.1103/PhysRevLett.84.5145 |
Abstract
In full flux-surface computer studies of tokamak edge turbulence, a spectrum of shear flows is found to control the turbulence level and not just the conventional (0,0)-mode flows. Flux tube domains too small for the large poloidal scale lengths of the continuous spectrum tend to overestimate the flows, and thus underestimate the transport. It is shown analytically and numerically that under certain conditions dominant (0,0)-mode flows independent of the domain size develop, essentially through Bose-Einstein condensation of the shear flows.
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"abstract": "In full flux-surface computer studies of tokamak edge turbulence, a spectrum\nof shear flows is found to control the turbulence level and not just the\nconventional (0,0)-mode flows. Flux tube domains too small for the large\npoloidal scale lengths of the continuous spectrum tend to overestimate the\nflows, and thus underestimate the transport. It is shown analytically and\nnumerically that under certain conditions dominant (0,0)-mode flows independent\nof the domain size develop, essentially through Bose-Einstein condensation of\nthe shear flows.",
"arxiv_id": "physics/0002004",
"authors": [
"K. Hallatschek"
],
"categories": [
"physics.plasm-ph"
],
"doi": "10.1103/PhysRevLett.84.5145",
"title": "Condensation of microturbulence-generated shear flows into global modes",
"url": "https://arxiv.org/abs/physics/0002004"
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