Results 161 to 170 of about 584 (191)

Current drive via magnetohydrodynamic helicity waves in a nonuniform plasma

Physics of Fluids B, 1990
Fundamentals of low-frequency current drive produced by a packet of arbitrarily polarized nonlinear Alfvén waves in an incompressible plasma with an inhomogeneous equilibrium magnetic field and aligned fluid velocity are explored. Analysis of the equations of magnetohydrodynamics with electrical conductivity and kinematic viscosity using an eikonal ...
Richard R. Mett, John A. Tataronis
exaly   +2 more sources

Magnetohydrodynamic Simulation of Pulsed Poloidal Current Drive in Reversed Field Pinch Plasmas

Journal of the Physical Society of Japan, 2005
Numerical simulations using magnetohydrodynamic (MHD) equations are performed for the pulsed poloidal current drive (PPCD) in reversed field pinch (RFP) plasmas. The PPCD is simulated by reducing the toroidal magnetic field at the wall, B z ( a ), in the short period.
Hajime Sakakita, Hisao Ashida
exaly   +2 more sources

Comment on ?Induction-drive magnetohydrodynamic propulsion?

Journal of Superconductivity and Novel Magnetism, 1995
Expressions for the propulsion force and the electrical efficiency of the induction ripple motor are derived without making use of the geometric assumption in previous studies of this special magnetohydrodynamic drive.
exaly   +2 more sources

An optofluidic variable optical attenuator based on magnetohydrodynamic drive

Proceedings of SPIE, 2016
With the development of optical communication, the optical attenuator becomes an important passive device. It is widely used in power equalization of DWDM system and photo detectors. Here an optofluidic variable optical attenuator (VOA) based on magnetohydrodynamic drive is presented.
Fangren Hu
exaly   +2 more sources

Experimental observation of low-frequency magnetohydrodynamic instabilities driven by energetic electrons in low hybrid current drive plasmas

Nuclear Fusion, 2021
Abstract Energetic electrons driving low-frequency magnetohydrodynamic instabilities, e.g., electron fishbone (eFB) modes and electron beta-induced Alfvén eigenmodes (eBAEs), are found in co- and counter-current drive low hybrid current drive (LHCD) plasma in HL-2A, respectively. The eBAEs are found in LHCD plasma for the first time. Two
Wei Chen
exaly   +2 more sources

Magnetohydrodynamic Drive forWater-Based CubeSat Propulsion

2023 Regional Student Conferences, 2023
[ES] Se ha desarrollado un modelo analítico para estimar el rendimiento de una nueva arquitectura de célula electrolítica magnetohidrodinámica (MHD) de microgravedad. Esta tecnología se encuentra actualmente en desarrollo con el objetivo final de separar el hidrógeno y el oxígeno del agua en microgravedad.
Macià Monfort-Castillo, Álvaro Romero-Calvo   +1 more
openaire   +3 more sources

Investigation of a Synchronized Current Scale-Down Drive for the Maritime Magnetohydrodynamic Engine

IEEE Journal of Emerging and Selected Topics in Power Electronics
Kin Lung Jerry Kan, Ka Wing Chan, Yat Chi Fong   +2 more
exaly   +2 more sources

AC Maritime Magnetohydrodynamic Engine—Resonant Drive Topologies, Propulsion Mechanism, and Experimental Validation

IEEE Transactions on Transportation Electrification
Kin Lung Jerry Kan, Hui Tang, Eric Ka Wai Cheng   +2 more
exaly   +2 more sources

Magnetohydrodynamic current drive for fusion confinement

IEEE Conference Record - Abstracts. 1999 IEEE International Conference on Plasma Science. 26th IEEE International Conference (Cat. No.99CH36297), 1999
Summary form only given, as follows. A closed current loop in a plasma is an effective means of confining plasma for fusion reactions, and is widely used in the tokamak and a variety of other toroidal systems. The problem is that the current loops are typically formed by induction, and therefore limited to pulsed operation.
G.B. Kirby Meacham, B.J. Quill
openaire   +1 more source

Modification of magnetohydrodynamic activity by lower hybrid current drive

Physics of Fluids B: Plasma Physics, 1989
The effect of magnetic islands on the propagation of lower hybrid waves is investigated analytically for a model slab equilibrium with a single helical perturbation corresponding to an m=1 or m=2 island. From the variation of k∥ inside the island, the parallel current is estimated with the same pitch as the original perturbation.
ROMANELLI, FRANCESCO, Cardinali, A, Bartiromo, R.   +2 more
openaire   +2 more sources