71 citations · 289 across the 11 of their papers we have counts for
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Dynamics of scrape-off layer filaments in detached conditions
David Schwörer, Nick R. Walkden, Benjamin D. Dudson +3
The here presented work studies the dynamics of filaments using 3D fluid simulations in the presence of detached background profiles. It was found that evolving the neutrals on the…
Influence of plasma background on 3D scrape-off layer filaments
David Schwörer, Nicholas R Walkden, Huw Leggate +4
This paper presents the effect of self-consistent plasma backgrounds including plasma-neutral interactions, on the dynamics of filament propagation. The principle focus is on the i…
Quiescence near the X-point of MAST measured by high speed visible imaging
N. R. Walkden, J. Harrison, S. A. Silburn +5
Using high speed imaging of the divertor volume, the region close to the X-point in MAST is shown to be quiescent. This is confirmed by three different analysis techniques and the…
Interpretation of scrape-off layer profile evolution and first-wall ion flux statistics on JET using a stochastic framework based on filamentary motion
N. R. Walkden, A. Wynn, F. Militello +6
This paper presents the use of a novel modelling technique based around intermittent transport due to filament motion, to interpret experimental profile and fluctuation data in the…
Dynamics of 3D isolated thermal filaments
N. R. Walkden, L. Easy, F. Militello +1
Simulations have been carried out to establish how electron thermal physics, introduced in the form of a dynamic electron temperature, affects isolated filament motion and dynamics…
A novel flexible field-aligned coordinate system for tokamak edge plasma simulation
Jarrod Leddy, Ben Dudson, Michele Romanelli +2
Tokamak plasmas are confined by a magnetic field that limits the particle and heat transport perpendicular to the field. Parallel to the field the ionised particles can move freely…
Investigation of the Effect of Resistivity on Scrape Off Layer Filaments using Three Dimensional Simulations
Luke Easy, Fulvio Militello, John Omotani +2
The propagation of filaments in the Scrape Off Layer (SOL) of tokamaks largely determine the plasma profiles in the region. In a conduction limited SOL, parallel temperature gradie…
The effects of shape and amplitude on the velocity of scrape-off layer filaments
J. T. Omotani, F. Militello, L. Easy +1
A complete model of the dynamics of scrape-off layer filaments will be rather complex, including temperature evolution, three dimensional geometry and finite Larmor radius effects.…
Profile measurements in the plasma edge of MAST using a ball pen probe
N. R. Walkden, J. Adamek, S. Allan +6
The ball pen probe (BPP) technique is used successfully to make profile measurements of plasma potential, electron temperature and radial electric field on the Mega Amp Spherical T…
BOUT++: Recent and current developments
B. D. Dudson, A. Allen, G. Breyiannis +12
BOUT++ is a 3D nonlinear finite-difference plasma simulation code, capable of solving quite general systems of PDEs, but targeted particularly on studies of the edge region of toka…