Results 21 to 30 of about 488 (167)

Nozzle Shocks, Disk Tearing, and Streamers Drive Rapid Accretion in 3D GRMHD Simulations of Warped Thin Disks

open access: yesThe Astrophysical Journal, 2023
The angular momentum of gas feeding a black hole (BH) may be misaligned with respect to the BH spin, resulting in a tilted accretion disk. Rotation of the BH drags the surrounding spacetime, manifesting as Lense–Thirring torques that lead to disk ...
Nicholas Kaaz   +6 more
doaj   +1 more source

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

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

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  

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

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

Effect of resistive heating on incessantly poignant thin needle in magnetohydrodynamic Sakiadis hybrid nanofluid

open access: yesAin Shams Engineering Journal, 2021
The flow and energy transport of water-ethylene glycol (EG) based Ti-Cu hybrid nanofluid due to incessantly poignant needle in magnetohydrodynamic Sakiadis flow with resistive heating is investigated.
Iskander Tlili   +4 more
doaj  

A Liquid-Metal Based Spiral Magnetohydrodynamic Micropump

open access: yesMicromachines, 2017
A liquid-metal based spiral magnetohydrodynamic (MHD) micropump is proposed in this work. The micropump was fabricated in a polydimethylsiloxane (PDMS)-glass hybrid microfluidic chip.
Xuyan Zhou, Meng Gao, Lin Gui
doaj   +1 more source

Magnetohydrodynamic Turbulence Formation in Solar Flares: 3D Simulation and Synthetic Observations

open access: yesThe Astrophysical Journal, 2023
Turbulent plasma motion is common in the universe and invoked in solar flares to drive effective acceleration leading to high-energy electrons. Unresolved mass motions are frequently detected in flares from extreme ultraviolet (EUV) observations, which ...
W. Ruan, L. Yan, R. Keppens
doaj   +1 more source

Development Status and Trends of the ECH Technology for the Magnetic Confinement Fusion

open access: yes南方能源建设
[Introduction] In magnetic confinement fusion research, electron cyclotron heating (ECH) and current drive means are widely implemented for applications including, but not limited to, plasma initiation, heating, non-inductive current drive, and ...
Donghui XIA   +3 more
doaj   +1 more source

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