Turbulent transport across shear layers in magnetically confined plasmas

Shear layers modify the turbulence in diverse ways and do not only suppress it. A spatial-temporal investigation of gyrofluid simulations in comparison with experiments allows to identify further details of the transport process across shear layers. Blobs in and outside a shear layer merge, thereby...

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Bibliographic Details
Published in:Physics of plasmas 2014-10, Vol.21 (10)
Main Authors: Nold, B., Manz, P., Ribeiro, T. T., Fuchert, G., Birkenmeier, G., Müller, H. W., Ramisch, M., Scott, B. D., Stroth, U.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Heat exchange
LAYERS
PLASMA
Plasma physics
Plasmas (physics)
SHEAR
Shear layers
SIMULATION
Transport processes
TURBULENCE
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Summary:Shear layers modify the turbulence in diverse ways and do not only suppress it. A spatial-temporal investigation of gyrofluid simulations in comparison with experiments allows to identify further details of the transport process across shear layers. Blobs in and outside a shear layer merge, thereby exchange particles and heat and subsequently break up. Via this mechanism particles and heat are transported radially across shear layers. Turbulence spreading is the immanent mechanism behind this process.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4897312