Blob-induced toroidal momentum transport in simple magnetized plasmas

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3559462· OSTI ID:21537284

Labit, B; Theiler, C; Fasoli, A; Furno, I; Ricci, P ^[1]

---

1. Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Federale de Lausanne, Association Euratom-Confederation Helvetique, CH-1015 Lausanne (Switzerland)

The link between toroidal flows and density blobs is experimentally demonstrated in TORPEX simple magnetized plasmas: momentum is transferred from an ideal-interchange mode to density blobs. The phase shift between the toroidal flow and the density perturbations observed in the interchange mode where the blob is born is conserved along the blob radial trajectory. This leads to dipolar structures of the blob-induced flow or to monopolar perturbations, so large that the toroidal flow gets transiently reversed. The turbulent toroidal momentum flux is dominated either by the nonlinear flux or by the convective part but not by the Reynolds stress component.

• OSTI ID: 21537284
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 3 Vol. 18; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CONVECTION
ENERGY TRANSFER
FLUID MECHANICS
HEAT TRANSFER
HYDRODYNAMICS
MAGNETOHYDRODYNAMICS
MASS TRANSFER
MECHANICS
PLASMA
PLASMA DENSITY