Results 31 to 40 of about 36,417 (233)

Theory of Fluid Instabilities in Partially Ionized Plasmas: An Overview

Frontiers in Astronomy and Space Sciences, 2022
Partially ionized plasmas (PIP) are essential constituents of many astrophysical environments, including the solar atmosphere, the interstellar medium, molecular clouds, accretion disks, planet ionospheres, cometary tails, etc., where the ionization ...
Roberto Soler, Roberto Soler, José Luis Ballester, José Luis Ballester   +3 more
doaj   +1 more source

A Two-Fluid Method for Ambipolar Diffusion

, 2008
We present a semi-implicit method for isothermal two-fluid ion-neutral ambipolar drift that is second-order accurate in space and time. The method has been implemented in the RIEMANN code for astrophysical fluid dynamics.
Balsara, Balsara, Balsara, Balsara, Balsara, Balsara, Balsara, Balsara, Basu, Blitz, Ciolek, Ciolek, David A. Tilley, Dinshaw S. Balsara, Draine, Draine, Falgarone, Falle, Fatuzzo, Indebetouw, Jiang, Jijina, Kudoh, Langer, Larson, Li, Li, Li, Lim, Mac Low, Mestel, Motte, Mouschovias, Mouschovias, Nakamura, O'Sullivan, O'Sullivan, Oishi, Pudritz, Roberge, Shu, Smith, Tóth, Tóth, Wardle, Zweibel   +45 more
core   +1 more source

Transverse electron-scale instability in relativistic shear flows [PDF]

, 2015
Electron-scale surface waves are shown to be unstable in the transverse plane of a shear flow in an initially unmagnetized plasma, unlike in the (magneto)hydrodynamics case. It is found that these unstable modes have a higher growth rate than the closely
Alves, E. P., Fonseca, R. A., Grismayer, T., Silva, L. O.   +3 more
core   +2 more sources

Collapsing dynamics of relativistic fluid in modified gravity admitting a conformal Killing vector

European Physical Journal C: Particles and Fields, 2023
The collapsing dynamics of relativistic fluid are explored in f(R) gravity in detailed systematic manner for the non-static spherically symmetric spacetime satisfying the equation of the conformal Killing vector.
Kazuharu Bamba, Z. Yousaf, M. Z. Bhatti, R. Nazer, Yuki Hashimoto   +4 more
doaj   +1 more source

Vortical and Wave Modes in 3D Rotating Stratified Flows: Random Large Scale Forcing

, 2007
Utilizing an eigenfunction decomposition, we study the growth and spectra of energy in the vortical and wave modes of a 3D rotating stratified fluid as a function of $\epsilon = f/N$. Working in regimes characterized by moderate Burger numbers, i.e. $Bu =
Anile AM, Annenkov SY, Babin A, Babin A, Babin A, Billant P, Cambon C, Chen Q, Cho JYN, Connaughton C, Gill A, Greenspan HP, Jai Sukhatme, Kartashova EA, Leslie M. Smith, Lindborg E, Lvov YV, Metais O, Metais O, Riley JJ, Smith KS, Sukhatme J, Tulloch R, Vanneste J, Yuan L   +24 more
core   +1 more source

Three-dimensional analytical magnetohydrostatic equilibria of rigidly rotating magnetospheres in cylindrical geometry

, 2009
We present three-dimensional solutions of the magnetohydrostatic equations in the co-rotating frame of reference outside a magnetized rigidly rotating cylinder.
Abramowitz M, Ferraro VCA, Mestel L, Neukirch T, Neukirch T, Neukirch T, Osherovich VA, Petrie GJD, Thomas Neukirch   +8 more
core   +1 more source

Azimuthally symmetric MHD and two-fluid equilibria with arbitrary flows [PDF]

, 2000
Magnetohydrodynamic (MHD) and two-fluid quasi-neutral equilibria with azimuthal symmetry, gravity and arbitrary ratios of (nonrelativistic) flow speed to acoustic and Alfven speeds are investigated.
A. Thyagaraja, Bogoyavlenskij, K. G. McClements   +2 more
core   +5 more sources

The two-fluid dynamics and energetics of the asymmetric magnetic reconnection in laboratory and space plasmas

Nature Communications, 2018
Magnetic energy in the plasma is transferred into particle energy by magnetic reconnection. Here the authors show the two-fluid dynamics of asymmetric magnetic reconnection in two different spatial scales of plasma, namely laboratory and astrophysical ...
M. Yamada, L.-J. Chen, J. Yoo, S. Wang, W. Fox, J. Jara-Almonte, H. Ji, W. Daughton, A. Le, J. Burch, B. Giles, M. Hesse, T. Moore, R. Torbert   +13 more
doaj   +1 more source

The time step constraint in radiation hydrodynamics

, 2019
Explicit radiation hydrodynamic simulations of the atmospheres of massive stars and of convection in accretion discs around white dwarfs suffer from prohibitively short time steps due to radiation.
Brandenburg, Axel, Das, Upasana
core   +1 more source

Reduced MHD and Astrophysical Fluid Dynamics [PDF]

Proceedings of the International Astronomical Union, 2010
AbstractRecent work has shown a relationship between between the equations of Reduced Magnetohydrodynamics (RMHD), used to model magnetic fusion laboratory experiments, and incompressible magnetoconvection (IMC), employed in the simulation of astrophysical fluid dynamics (AFD), which means that the two systems are mathematically equivalent in certain ...
openaire   +1 more source