Results 1 to 10 of about 39,460 (170)
Transport-Driven Toroidal Rotation in the Tokamak Edge [PDF]
Physical Review Letters, 2012 The interaction of passing-ion drift orbits with spatially-inhomogeneous but purely diffusive radial transport is demonstrated to cause spontaneous toroidal spin-up to experimentally-relevant values in the tokamak edge.
T. Stoltzfus-Dueck
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Toroidal and poloidal energy in rotating Rayleigh-B\'enard convection [PDF]
Journal of Fluid Mechanics, 2014 We consider rotating Rayleigh-B\'enard convection of a fluid with a Prandtl number of $Pr = 0.8$ in a cylindrical cell with an aspect ratio $\Gamma = 1/2$. Direct numerical simulations were performed for the Rayleigh number range $10^5 \leq Ra \leq 10^9$
Horn, Susanne, Shishkina, Olga
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A model for the reversal of the toroidal rotation in tokamak [PDF]
, 2012 The transition from toroidal counter- to co- rotation in the core plasma has been observed at L to H transition in several tokamaks. Spontaneous reversal has also been observed in TCV beyond a threshold in the density.
Florin Spineanu, Madalina Vlad
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Intrinsic Rotation of Toroidally Confined Magnetohydrodynamics [PDF]
Physical Review Letters, 2012 Accepted for publication in Physical Review ...
Morales, Jorge +3 more
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ROTATING ELECTROMAGNETIC WAVES IN TOROID-SHAPED REGIONS [PDF]
International Journal of Modern Physics C, 2010 Electromagnetic waves, solving the full set of Maxwell equations in vacuum, are numerically computed. These waves occupy a fixed bounded region of the three-dimensional space, topologically equivalent to a toroid. Thus, their fluid dynamics analogs are vortex rings.
C. Chinosi +2 more
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Toroidal Rotation Driven by the Polarization Drift [PDF]
Physical Review Letters, 2009 Starting from a phase space conserving gyrokinetic formulation, a systematic derivation of parallel momentum conservation uncovers a novel mechanism by which microturbulence may drive intrinsic rotation. This mechanism, which appears in the gyrokinetic formulation through the parallel nonlinearity, emerges due to charge separation induced by the ...
Mcdevitt, C.J. +3 more
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Zoom system by rotation of toroidal lenses
Optics Express, 2020 In a recent publication [Appl. Opt. 57, 8087 (2018).] a zoom system based on rotating toroidal lenses had been theoretically suggested. Here we demonstrate two different experimental realizations of such a system. The first consists of a set of four individually rotatable cylindrical lenses, and the second of four rotatable diffractive optical elements
Nicola Bregenzer +2 more
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Toroidal dipolar supersolid with a rotating weak link
Physical Review A, 2023 Ring-shaped superfluids with weak links provide a perfect environment for studying persistent currents and dynamic stirring protocols. Here, we investigate the effects of a weak-link system on dipolar supersolids. By calculating the ground state energy at fixed angular momenta, we find that metastable persistent currents may exist in the supersolid ...
M. Nilsson Tengstrand +3 more
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Observations of Reduced Electron Gyroscale Fluctuations in National Spherical Torus Experiment H-Mode Plasmas with Large E X B Flow Shear [PDF]
, 2019 Electron gyroscale fluctuation measurements in National Spherical Torus Experiment H-mode plasmas with large toroidal rotation reveal fluctuations consistent with electron temperature gradient (ETG) turbulence.
Bell, RE +11 more
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Stability of the toroidal magnetic field in rotating stars [PDF]
, 2013 The magnetic field in stellar radiation zones can play an important role in phenomena such as mixing, angular momentum transport, etc. We study the effect of rotation on the stability of a predominantly toroidal magnetic field in the radiation zone.
Bonanno, Alfio, Urpin, Vadim
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