Results 121 to 130 of about 165,060 (314)

Effects of Thermal Diffusion and Viscous Dissipation on Unsteady MHD Free Convection Flow Past a Vertical Porous Plate Under Oscillatory Suction Velocity with Heat Sink

open access: yesInternational Journal of Applied Mechanics and Engineering, 2014
The thermal diffusion and viscous dissipation effects on an unsteady MHD free convection heat and mass transfer flow of an incompressible, electrically conducting, fluid past an infinite vertical porous plate embedded in a porous medium of time dependent
B. Prabhakar Reddy
doaj   +1 more source

Computational MHD Jets [PDF]

open access: yesSymposium - International Astronomical Union, 1990
By using two-dimensional magnetohydrodynamic (MHD) code, the following non-steady MHD jets and outflows are studied in relation to jets ejected from central regions of galaxies: (1) a jet driven by gas pressure gradient, collimated by vertical magnetic fields (as a model of bipolar flows ejected from a hot bubble created by starbursts); (2) a magnetic ...
openaire   +2 more sources

System Design Considerations for Magneto‐Electrocatalysis of the Oxygen Evolution Reaction

open access: yesSmall, EarlyView.
Electrocatalytic water‐splitting can be controlled using a magnetic field. The commercial prospects are exciting, but the progress is stuck in the fundamental stage of research. Progress is stagnated by publications with conflicting results, incomplete analysis, and inconsistent experimental setups.
Dorottya Szalay   +3 more
wiley   +1 more source

Minimum energy states of the plasma pinch in standard and Hall magnetohydrodynamics

open access: yes, 2000
Axisymmetric relaxed states of a cylindrical plasma column are found analytically in both standard and Hall magnetohydrodynamics (MHD) by complete minimization of energy with constraints imposed by invariants inherent in corresponding models. It is shown
Khalzov, I. V.   +3 more
core   +1 more source

MHD waves in sunspots

open access: yesarXiv: Solar and Stellar Astrophysics, 2015
20 pages, 6 figures, Chapter in AGU Monograph (in press), Review ...
openaire   +3 more sources

Rates and risk factors for migraine progression using multiple definitions of progression: Results of the longitudinal OVERCOME (US) study. [PDF]

open access: yesHeadache
Abstract Objective To estimate rates of migraine progression and assess predictors of progression in a large, longitudinal cohort study using the traditional definition and two alternative definitions of migraine progression. Background Traditionally, migraine progression is defined as moving from episodic migraine (EM) with ≤ 14 monthly headache days (
Buse DC   +8 more
europepmc   +2 more sources

LSFEM implementation of MHD numerical solver [PDF]

open access: yesarXiv, 2012
Many problems in physics are inherently of multi-scale nature. The issues of MHD turbulence or magnetic reconnection, namely in the hot and sparse, almost collision-less astrophysical plasmas, can stand as clear examples. The Finite Element Method (FEM) with adaptive gridding appears to be the appropriate numerical implementation for handling the broad
arxiv  

On the uniqueness for the 2D MHD equations without magnetic diffusion [PDF]

open access: yesarXiv, 2015
In this paper, we obtain the uniqueness of the 2D MHD equations, which fills the gap of recent work \cite{1} by Chemin et al.
arxiv  

Incident energy determination of three‐phase arc flash using magnetohydrodynamics simulations: A case study for horizontal electrodes in open‐air configurations

open access: yesHigh Voltage, EarlyView.
Abstract Arc flashes pose significant hazards to personnel working with energised power lines due to their high thermal risk, quantified by incident energy (IE) in joules or calories per area. Accurate estimation of IE is crucial for ensuring safety. The most widely employed method for estimating IE from an arc flash is outlined in IEEE Std 1584‐2018 ...
Pedro O. Bacin   +9 more
wiley   +1 more source

Existence of solutions for the MHD-Leray-alpha equations and their relations to the MHD equations

open access: yesJournal of Mathematical Analysis and Applications, 2007
AbstractIn this paper we derive some new equations and we call them MHD-Leray-alpha equations which are similar to the MHD equations. We put forward the concept of weak and strong solutions for the new equations. Whether the 3-dimensional MHD equations have a unique weak solution is unknown, however, there is a unique weak solution for the 3 ...
Kaitai Li, Yongjiang Yu
openaire   +2 more sources

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