Results 1 to 10 of about 1,052,821 (217)

Effects of the resonance modification by electron cyclotron current drive on the linear and nonlinear dynamics of energetic particle driven magnetohydrodynamics modes in Heliotron J [PDF]

open access: goldNuclear Fusion, 2023
Abstract This study investigates the effects of electron cyclotron current drive (ECCD) on the linear and nonlinear dynamics of energetic-particle (EP)-driven magnetohydrodynamics (MHD) instability (mode) in Heliotron J (HJ), using MEGA, a nonlinear hybrid EP-MHD simulation code.
P. Adulsiriswad   +12 more
openaire   +3 more sources

Toward 3D MHD modeling of neoclassical tearing mode suppression by ECCD

open access: yesEPJ Web of Conferences, 2012
We propose a framework to extend the magnetohydrodynamic (MHD) equations to include electron cyclotron current drive (ECCD) and discuss previous models proposed by Giruzzi et al. [2] and by Hegna and Callen [3].
Westerhof E., Pratt J.
doaj   +1 more source

Model for current drive induced crash cycles in W7-X

open access: yesNuclear Fusion, 2021
In the Wendelstein 7-X (W7-X) stellarator, the vacuum rotational transform, ι, has a flat radial profile and does not cross any major rational resonance.
K. Aleynikova   +14 more
semanticscholar   +1 more source

Effect of nanoparticle shape on unsteady liquid film flow of MHD Oldroyd-B ferrofluid

open access: yesAin Shams Engineering Journal, 2021
A computational framework is carried out to investigate the drive, and thermal transport of the thin-film flow of unstable magnetohydrodynamic (MHD) Oldroyd-B ferrofluid suspend with cobalt ferrite (CoFe2O4) nanoparticles in water.
Iskander Tlili   +3 more
doaj  

Dynamic performance of the plasma‐triggered‐based protective gas switch used in the hybrid UHVDC system

open access: yesIET Generation, Transmission & Distribution, 2023
Following the design demands of the protective switch used in ±800 kV hybrid UHVDC system, a plasma‐triggered‐based protective gas switch (PTGS) is developed by performing the comparative study of its dynamic performance by considering the arc dynamic ...
Wen Wang   +5 more
doaj   +1 more source

Unveiling the Mechanism for the Rapid Acceleration Phase in a Solar Eruption

open access: yesThe Astrophysical Journal Letters, 2023
Two major mechanisms have been proposed to drive the solar eruptions: the ideal magnetohydrodynamic instability and the resistive magnetic reconnection. Due to the close coupling and synchronicity of the two mechanisms, it is difficult to identify their ...
Ze Zhong   +4 more
doaj   +1 more source

Wing magnetohydrodynamic facility of aircraft propulsion system

open access: yesPráce a štúdie - Vydanie 10, 2021
Magnetohydrodynamics is one of the relatively new fields of physics studying the dynamics of magnetic fields in electrically conductive fluids. The implementation using magnetohydrodynamic principles applied to aircraft propulsion systems is so far only ...
P. Miča, J. Čerňan
semanticscholar   +1 more source

Global Simulations of the Vertical Shear Instability with Nonideal Magnetohydrodynamic Effects [PDF]

open access: yesAstrophysical Journal, 2019
The mechanisms of angular momentum transport and the level of turbulence in protoplanetary disks (PPDs) are crucial for understanding many aspects of planet formation. In recent years, it has been realized that the magneto-rotational instability tends to
C. Cui, X. Bai
semanticscholar   +1 more source

A Multi-Pump Magnetohydrodynamics Lab-On-A-Chip Device for Automated Flow Control and Analyte Delivery

open access: yesSensors, 2020
This article shows the development of a computer-controlled lab-on-a-chip device with three magnetohydrodynamic (MHD) pumps and a pneumatic valve. The chip was made of a stack of layers of polymethylmethacrylate (PMMA), cut using a laser engraver and ...
Rafael M. Cardoso   +4 more
doaj   +1 more source

Kink instabilities in relativistic jets can drive quasi-periodic radiation signatures [PDF]

open access: yes, 2020
Relativistic jets are highly collimated plasma outflows emerging from accreting black holes. They are launched with a significant amount of magnetic energy, which can be dissipated to accelerate nonthermal particles and give rise to electromagnetic ...
L. Dong, Haocheng Zhang, D. Giannios
semanticscholar   +1 more source

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