Results 41 to 50 of about 55,499 (112)

Kelvin-Helmholtz instability of a coronal streamer

open access: yes, 2013
The shear-flow-driven instability can play an important role in energy transfer processes in coronal plasma. We present for the first time the observation of a kink-like oscillation of a streamer probably caused by the streaming kinkmode Kelvin-Helmholtz
Feng, Li, Gan, Weiqun, Inhester, Bernd
core   +1 more source

Diffusion and Concentration of Solids in the Dead Zone of a Protoplanetary Disk

open access: yes, 2018
The streaming instability is a promising mechanism to drive the formation of planetesimals in protoplanetary disks. To trigger this process, it has been argued that sedimentation of solids onto the mid-plane needs to be efficient, and therefore that a ...
Johansen, Anders   +2 more
core   +2 more sources

Effects of surface profile on a boundary-driven acoustic streaming field

open access: yes
Control of boundary-driven streaming in acoustofluidic systems is vital for various microfluidic applications either to generate it as a positive mechanism (e.g. microfluidic mixing, heat/mass transfer and fluid pumping) or suppressing it as an undesired
Glynne-Jones, Peter   +2 more
core   +1 more source

Effects of surface profile on a boundary-driven acoustic streaming field

open access: yes, 2014
Control of boundary-driven streaming in acoustofluidic systems is vital for various microfluidic applications either to generate it as a positive mechanism (e.g. microfluidic mixing, heat/mass transfer and fluid pumping) or suppressing it as an undesired disturbance (e.g. particle/cell focusing).
Lei, Junjun   +2 more
openaire   +1 more source

Solving the Boltzmann Equation on GPU

open access: yes, 2010
We show how to accelerate the direct solution of the Boltzmann equation using Graphics Processing Units (GPUs). In order to fully exploit the computational power of the GPU, we choose a method of solution which combines a finite difference discretization
A. Frezzotti   +20 more
core   +1 more source

Galactic winds driven by cosmic-ray streaming

open access: yes, 2012
Galactic winds are observed in many spiral galaxies with sizes from dwarfs up to the Milky Way, and they sometimes carry a mass in excess of that of newly formed stars by up to a factor of ten. Multiple driving processes of such winds have been proposed,
Achterberg   +107 more
core   +1 more source

Coronal rain in magnetic arcades: Rebound shocks, Limit cycles, and Shear flows

open access: yes, 2015
We extend our earlier multidimensional, magnetohydrodynamic simulations of coronal rain occurring in magnetic arcades with higher resolution, grid-adaptive computations covering a much longer ($>6$ hour) timespan.
Fang, X.   +3 more
core   +1 more source

Instability of time-periodic flows [PDF]

open access: yes
The instabilities of some spatially and/or time-periodic flows are discussed, in particular, flows with curved streamlines which can support Taylor-Gortler vortices are described in detail.
Hall, P.
core   +1 more source

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