Results 61 to 70 of about 258,872 (345)

Blow-up of dyadic MHD models with forward energy cascade [PDF]

open access: yesarXiv, 2021
A particular type of dyadic model for the magnetohydrodynamics (MHD) with forward energy cascade is studied. The model includes intermittency dimension $\delta$ in the nonlinear scales. It is shown that when $\delta$ is small, positive solution with large initial data for either the dyadic MHD model or the dyadic Hall MHD develops blow-up in finite ...
arxiv  

THREE-DIMENSIONAL KINETIC-MHD MODEL OF THE GLOBAL HELIOSPHERE WITH THE HELIOPAUSE-SURFACE FITTING [PDF]

open access: yes, 2015
This paper provides a detailed description of the latest version of our model of the solar wind (SW) interaction with the local interstellar medium (LISM).
V. Izmodenov, D. Alexashov
semanticscholar   +1 more source

Multiwavelength Studies of MHD Waves in the Solar Chromosphere [PDF]

open access: yes, 2015
The chromosphere is a thin layer of the solar atmosphere that bridges the relatively cool photosphere and the intensely heated transition region and corona. Compressible and incompressible waves propagating through the chromosphere can supply significant
D. Jess   +5 more
semanticscholar   +1 more source

Comparison of spectral slopes of magnetohydrodynamic and hydrodynamic turbulence and measurements of alignment effects

open access: yes, 2009
We performed a series of high-resolution (up to 1024^3) direct numerical simulations of hydro and MHD strong turbulence. We found that for simulations with normal viscosity the slopes for spectra of MHD are similar, although slightly more shallower than ...
A. Beresnyak   +31 more
core   +1 more source

Parker Problem in Hall Magnetohydrodynamics [PDF]

open access: yes, 2008
Parker problem in Hall magnetohydrodynamics (MHD) is considered. Poloidal shear into the toroidal flow generated by the Hall effect is incorporated.
Shivamoggi, Bhimsen K.
core   +3 more sources

Analytical Study of Certain Magnetohydrodynamic-alpha Models

open access: yes, 2006
In this paper we present an analytical study of a subgrid scale turbulence model of the three-dimensional magnetohydrodynamic (MHD) equations, inspired by the Navier-Stokes-alpha (also known as the viscous Camassa-Holm equations or the Lagrangian ...
Edriss S. Titi   +8 more
core   +2 more sources

MHD wave modes resolved in fine-scale chromospheric magnetic structures [PDF]

open access: yes, 2015
Within the last decade, due to significant improvements in the spatial and temporal resolution of chromospheric data, magnetohydrodynamic (MHD) wave studies in this fascinating region of the Sun's atmosphere have risen to the forefront of solar physics ...
Jess, D. B., Verth, G.
core   +2 more sources

Generalized MHD equations [PDF]

open access: yesJournal of Differential Equations, 2003
AbstractSolutions of the d-dimensional generalized MHD (GMHD) equations∂tu+u·∇u=−∇P+b·∇b−ν(−Δ)αu,∂tb+u·∇b=b·∇u−η(−Δ)βbare studied in this paper. We pay special attention to the impact of the parameters ν,η,α and β on the regularity of solutions. Our investigation is divided into three major cases: (1) ν>0 and η>0, (2) ν=0 and η>0, and (3) ν=0 and η=0 ...
openaire   +1 more source

Effectiveness of smoking cessation intervention based on the ABC Approach in patients with TB

open access: yesPublic Health Action
SETTING: Urban setting in the Philippines. OBJECTIVE: To assess the effectiveness of the ABC Approach developed by The Union as a tobacco-smoking cessation intervention for TB patients at a primary healthcare level in an urban setting in the Philippines.
A. Ohkado   +9 more
doaj   +1 more source

Damping of MHD turbulence in partially ionized plasma: implications for cosmic ray propagation

open access: yes, 2015
We study the damping from neutral-ion collisions of both incompressible and compressible magnetohydrodynamic (MHD) turbulence in partially ionized medium. We start from the linear analysis of MHD waves applying both single-fluid and two-fluid treatments.
Lazarian, A., Xu, Siyao, Yan, Huirong
core   +2 more sources

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