Results 51 to 60 of about 199,018 (327)

A study of vorticity formation in high energy nuclear collisions [PDF]

open access: yes, 2015
We present a quantitative study of vorticity formation in peripheral ultrarelativistic heavy-ion collisions at $${\sqrt{s}_\mathrm{NN}}= 200$$sNN=200 GeV by using the ECHO-QGP numerical code, implementing relativistic dissipative hydrodynamics in the ...
F. Becattini   +10 more
semanticscholar   +1 more source

Numerical Investigation of Combined Buoyancy and Surface Tension Driven Convection in an Axi-Symmetric Cylindrical Annulus

open access: yesNonlinear Analysis, 2007
A numerical study is conducted to understand the effect of surface tension on buoyancy driven convection in a vertical cylindrical annular cavity filled with a low Prandtl number fluid.
M. Sankar, M. Venkatachalappa
doaj   +1 more source

Skalentrennung von Wetter und Klima am Beispiel der horizontalen Transporte

open access: yesMeteorologische Zeitschrift, 1999
Das Problem der Filterung atmosphärischer Transporte wird qualitativ und quantitativ diskutiert. Als Lösungsansatz wird vorgeschlagen, in globalen Modellen neue, klimaspezifische Variablen zu benutzen.
Andreas Hauschild   +2 more
doaj   +1 more source

Hyperviscous vortices

open access: yesJournal of Fluid Mechanics, 1994
The structure of diffusing planar and axisymmetric vortices of the hyperviscous Navier-Stokes equations is studied for different orders of the dissipative operator. It is found that, except for the classical Newtonian case, the vorticity decays at large distances by means of oscillatory tails, containing circulation of alternating signs.
openaire   +3 more sources

Relativistic Electron Vortices [PDF]

open access: yesPhysical Review Letters, 2017
The desire to push recent experiments on electron vortices to higher energies leads to some theoretical difficulties. In particular the simple and very successful picture of phase vortices of vortex charge ℓ associated with ℓℏ units of orbital angular momentum per electron is challenged by the facts that (i) the spin and orbital angular momentum are ...
openaire   +3 more sources

Ribbon Turbulence [PDF]

open access: yes, 2014
We investigate the non-linear equilibration of a two-layer quasi-geostrophic flow in a channel forced by an imposed unstable zonal mean flow, paying particular attention to the role of bottom friction.
Antoine Venaille   +3 more
core   +3 more sources

Visualization of an Isolated Vortex Ring Generated from Step-Like Wind Variation and the Overshoot Phenomenon of Axial Velocity

open access: yesJournal of Fluid Science and Technology, 2011
The flow field of a free square jet generated from an unsteady wind tunnel with a step-like axial velocity variation was measured using an ultrasonic anemometer. Three-dimensional velocity vector fields were synthesized by computational modeling from the
Yutaka HARA   +2 more
doaj   +1 more source

Experiment and numerical simulation of an aluminum circular-blade butterfly wind turbine

open access: yesJournal of Fluid Science and Technology, 2016
To reduce costs involved in manufacturing small wind turbines, an aluminum circular-blade butterfly wind turbine (ACBBWT) has been developed, in which four blades of the turbine were extruded and bent to shape then attached directly to a rotating flange.
Yutaka HARA   +9 more
doaj   +1 more source

Upper Ocean Thermodynamic Response to Coupling Currents to Wind Stress over the Gulf Stream

open access: yesJournal of Marine Science and Engineering
We use high-resolution coupled atmosphere–ocean model simulations over the Gulf Stream extension region during a winter season to examine the upper ocean thermodynamic response to including current feedback to atmospheric wind stress. We demonstrate that
Jackie May, Mark A. Bourassa
doaj   +1 more source

Investigation of the Relationship between Sudan Low-pressure System and the Heavy PrecipitationOccurredonApril 30, 1994in Kermanshah [PDF]

open access: yesمخاطرات محیط طبیعی, 2014
This study aimed to identify the cause of intense rainfall occurred on April 30, 1994 in Kermanshah, The maps of surface pressure in the upper atmosphere Sudan and low pressure systems result in precipitation patterns were identified The role of this ...
Alireza movaghari, mahmood khosravi
doaj   +1 more source

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