Results 121 to 130 of about 258,872 (345)

MHD Turbulence, Turbulent Dynamo and Applications [PDF]

open access: yes, 2014
MHD Turbulence is common in many space physics and astrophysics environments. We first discuss the properties of incompressible MHD turbulence. A well-conductive fluid amplifies initial magnetic fields in a process called small-scale dynamo. Below equipartition scale for kinetic and magnetic energies the spectrum is steep (Kolmogorov -5/3) and is ...
arxiv   +1 more source

Nanocomposites from Au‐Doped Vinylogous Urethane Vitrimers Based on Different Block Copolymers and Their Recyclability in Combination with Plasmonic Heating

open access: yesMacromolecular Rapid Communications, EarlyView.
The incorporation of spherical gold nanoparticles as fixed parts in block copolymer‐based vinylogous urethane vitrimer networks results in improved thermal, mechanical, and thermo‐mechanical properties of the nanocomposites while maintaining the nanoparticles’ unique optical properties.
Patrick Schütz   +4 more
wiley   +1 more source

Effect of Electric Field on Dispersion of a Solute in an MHD Flow through a Vertical Channel With and Without Chemical Reaction

open access: yesInternational Journal of Applied Mechanics and Engineering, 2016
The longitudinal dispersion of a solute between two parallel plates filled with two immiscible electrically conducting fluids is analyzed using Taylor’s model.
J.C. Umavathi   +3 more
doaj   +1 more source

On some Liouville type Theorems for the stationary MHD and Hall-MHD equations [PDF]

open access: yesarXiv, 2019
We prove several Liouville type results for the stationary MHD and Hall-MHD equations. In particular, we show that the velocity and magnetic field, belonging to some Lorentz spaces or satisfying a priori decay assumption, must be zero.
arxiv  

Post-Newtonian Magnetohydrodynamics [PDF]

open access: yesarXiv, 2020
Using the fully nonlinear and exact perturbation formulation with magnetohydrodynamics (MHD) in Minkowski background we derive first-order post-Newtonian (1PN) equations without imposing the slicing (temporal gauge) condition. The 1PN MHD formulation is complementary to our recently presented fully relativistic MHD combined with 0PN gravity available ...
arxiv  

Local Well-Posedness for the Hall-MHD Equations with Fractional Magnetic Diffusion [PDF]

open access: yes, 2014
The Hall-magnetohydrodynamics (Hall-MHD) equations, rigorously derived from kinetic models, are useful in describing many physical phenomena in geophysics and astrophysics.
D. Chae, Renhui Wan, Jiahong Wu
semanticscholar   +1 more source

Evolutionary Conditions in the Dissipative MHD System Revisited

open access: yes, 2007
The evolutionary conditions for the dissipative continuous magnetohydrodynamic (MHD) shocks are studied. We modify Hada's approach in the stability analysis of the MHD shock waves.
Inoue, Tsuyoshi, Inutsuka, Shu-ichiro
core   +1 more source

Diffusion along Perivascular Spaces as a Marker for Glymphatic System Impairment in Huntington's Disease

open access: yesMovement Disorders, EarlyView.
Abstract Background The aim was to investigate if glymphatic function is impaired in patients with Huntington's disease (HD) and its clinical relevance. Methods Forty‐nine subjects carrying mutant Huntingtin (mHTT), comprising 35 manifest (mHD) and 14 pre‐manifest (PreHD), and 35 healthy controls (HC) were recruited in this study.
Jin‐Hui Yin   +3 more
wiley   +1 more source

Unsteady hydromagnetic couette flow due to ramped motion of one of the porous plates

open access: yesInternational Journal of Applied Mechanics and Engineering, 2013
An unsteady flow formation in Couette motion of an electrically conducting fluid subject to transverse magnetic field has been analyzed in the presence of suction/injection through the porous plates when one of the porous plates is in ramped motion.
B.K. Jha, H.M. Jibril
doaj   +1 more source

Alias Sampling Effect on the Calculation of MHD Mode Number in Fusion Plasma [PDF]

open access: yesarXiv, 2019
Detailed alias frequency formula and the effect of alias sampling on the calculation of MHD mode number are derived. It is discovered that the absolute MHD mode number/structure does not change under alias sampling. This discovery can help us to determine the structure of the high frequency MHD mode with low frequency sampled diagnostics even when the ...
arxiv  

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