The influence of finite ion temperature on plasma blob dynamics

P. Manz; G. Birkenmeier; D. Carralero; G. Fuchert; H. W. Müller; S. H. Müller; B. D. Scott; U. Stroth; T. T. Ribeiro; E. Wolfrum

doi:10.1088/0741-3335/57/1/014012

The influence of finite ion temperature on plasma blob dynamics

P. Manz, G. Birkenmeier, D. Carralero, G. Fuchert, H. W. Müller, S. H. Müller, B. D. Scott, U. Stroth, T. T. Ribeiro, E. Wolfrum

Chair of Plasmarand- und Divertorphysik

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

In the scrape-off layer of magnetically confined fusion devices, the ion temperature is at least as high as the electron temperature and usually even much higher. The effects of the finite ion temperature enhance the blob drive and modify the vorticity. Recently developed scaling laws for blob velocity independent of its size, based on the full drift-interchange-Alfvén fluid equations are compared with recent experiments on the ASDEX Upgrade tokamak and gyrofluid simulations, showing remarkable agreement for the blob sizes and reasonable agreement for the blob velocities.

Original language	English
Article number	014012
Journal	Plasma Physics and Controlled Fusion
Volume	57
Issue number	1
DOIs	https://doi.org/10.1088/0741-3335/57/1/014012
State	Published - 28 Nov 2014

Keywords

blobs
finite Lamor radius effects
ion temperature
scrape-off layer
transport

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title = "The influence of finite ion temperature on plasma blob dynamics",

abstract = "In the scrape-off layer of magnetically confined fusion devices, the ion temperature is at least as high as the electron temperature and usually even much higher. The effects of the finite ion temperature enhance the blob drive and modify the vorticity. Recently developed scaling laws for blob velocity independent of its size, based on the full drift-interchange-Alfv{\'e}n fluid equations are compared with recent experiments on the ASDEX Upgrade tokamak and gyrofluid simulations, showing remarkable agreement for the blob sizes and reasonable agreement for the blob velocities.",

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AU - Manz, P.

AU - Birkenmeier, G.

AU - Carralero, D.

AU - Fuchert, G.

AU - Müller, H. W.

AU - Müller, S. H.

AU - Scott, B. D.

AU - Stroth, U.

AU - Ribeiro, T. T.

AU - Wolfrum, E.

PY - 2014/11/28

Y1 - 2014/11/28

N2 - In the scrape-off layer of magnetically confined fusion devices, the ion temperature is at least as high as the electron temperature and usually even much higher. The effects of the finite ion temperature enhance the blob drive and modify the vorticity. Recently developed scaling laws for blob velocity independent of its size, based on the full drift-interchange-Alfvén fluid equations are compared with recent experiments on the ASDEX Upgrade tokamak and gyrofluid simulations, showing remarkable agreement for the blob sizes and reasonable agreement for the blob velocities.

AB - In the scrape-off layer of magnetically confined fusion devices, the ion temperature is at least as high as the electron temperature and usually even much higher. The effects of the finite ion temperature enhance the blob drive and modify the vorticity. Recently developed scaling laws for blob velocity independent of its size, based on the full drift-interchange-Alfvén fluid equations are compared with recent experiments on the ASDEX Upgrade tokamak and gyrofluid simulations, showing remarkable agreement for the blob sizes and reasonable agreement for the blob velocities.

KW - blobs

KW - finite Lamor radius effects

KW - ion temperature

KW - scrape-off layer

KW - transport

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JO - Plasma Physics and Controlled Fusion

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The influence of finite ion temperature on plasma blob dynamics

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Keywords

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