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Radially global δf ...
Radially global δf computation of neoclassical phenomena in a tokamak pedestal
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Landreman, M. (författare)
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Parra, F. (författare)
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Catto, P. (författare)
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visa fler...
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Ernst, D. (författare)
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- Pusztai, Istvan, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa färre...
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(creator_code:org_t)
- 2014
- 2014
- Engelska.
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Ingår i: Plasma Physics and Controlled Fusion. - 1361-6587 .- 0741-3335. ; 56:4, s. 045005-
- Relaterad länk:
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https://research.cha...
Abstract
Ämnesord
Stäng
- Conventional radially-local neoclassical calculations become inadequate if the radial gradient scale lengths of the H-mode pedestal become as small as the poloidal ion gyroradius. Here, we describe a radially global δf continuum code that generalizes neoclassical calculations to allow for stronger gradients. As with conventional neoclassical calculations, the formulation is time-independent and requires only the solution of a single sparse linear system. We demonstrate precise agreement with an asymptotic analytic solution of the radially global kinetic equation in the appropriate limits of aspect ratio and collisionality. This agreement depends crucially on accurate treatment of finite orbit width effects.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Nyckelord
- simulation code
- neoclassical transport
- tokamak pedestal
- radially global
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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