Results 71 to 80 of about 199,018 (327)

Vorticity and Potential Vorticity in Mountain Wakes

open access: yesJournal of the Atmospheric Sciences, 1999
A wake is traditionally defined as the region of nearly stagnant flow downstream of a body in a uniform stream. In a stratified fluid, the motions and density surfaces downstream of an obstacle become primarily horizontal; the vertical component of the vorticity associated with the wake, coexisting with the stable vertical density stratification ...
Rotunno, Richard   +2 more
openaire   +2 more sources

Ship waves in the presence of uniform vorticity [PDF]

open access: yesJournal of Fluid Mechanics, 2014
Lord Kelvin’s result that waves behind a ship lie within a half-angle $\phi _{\mathit{K}}\approx 19^{\circ }28'$ is perhaps the most famous and striking result in the field of surface waves.
S. Ellingsen
semanticscholar   +1 more source

Membrane‐Mediated Force Transduction Drives Stick‐Slip Motion of Lipid Vesicles

open access: yesAdvanced Science, EarlyView.
A rotating magnetic field actuates a ferromagnetic particle inside a lipid vesicle, generating internal flows that induce stick‐slip propulsion near a surface. Membrane properties—elasticity, excess area, and phase behavior—modulate this motion by shaping stress dissipation and force transduction.
Paula Magrinya   +3 more
wiley   +1 more source

Turbulent shear flow downstream of a sphere with and without an o-ring located over a plane boundary

open access: yesEPJ Web of Conferences, 2012
Flow-structure interaction of separated shear flow from the sphere and a flat plate was investigated by using dye visualization and the particle image velocimetry technique. Later, a passive control method was applied with 2mm oring located on the sphere
Sahin Besir   +4 more
doaj   +1 more source

On the interaction of Jupiter's Great Red Spot and zonal jet streams

open access: yes, 2007
In this paper, Jupiter's Great Red Spot (GRS) is used to determine properties of the Jovian atmosphere that cannot otherwise be found. These properties include the potential vorticity of the GRS and its neighboring jet streams, the shear imposed on the ...
Asay-Davis   +22 more
core   +1 more source

Microfluidic Mixing with the Dynamic Control of Magnetic Actuation

open access: yesAdvanced Intelligent Systems, EarlyView.
Schematic illustration and flow field visualization of magnetically actuated L‐shaped microrobots displaying cooperative vortex generation for enhanced microscale mixing. The left side shows the electromagnetic actuation setup, which enables programmable control of rotational direction and frequency.
Prashant Kishor Sharma   +2 more
wiley   +1 more source

Selection of quasi-stationary states in the stochastically forced Navier-Stokes equation on the torus

open access: yes, 2020
The stochastically forced vorticity equation associated with the two dimensional incompressible Navier-Stokes equation on $D_\delta:=[0,2\pi\delta]\times [0,2\pi]$ is considered for $\delta\approx 1$, periodic boundary conditions, and viscocity ...
Beck, Margaret   +3 more
core   +1 more source

Fully nonlinear long-wave models in the presence of vorticity [PDF]

open access: yesJournal of Fluid Mechanics, 2014
We study here Green–Naghdi type equations (also called fully nonlinear Boussinesq, or Serre equations) modelling the propagation of large-amplitude waves in shallow water without a smallness assumption on the amplitude of the waves.
A. Castro, D. Lannes
semanticscholar   +1 more source

Magnetic Solitons and Thickness‐Dependent Magnetization Reversal in Interconnected Helical Nanowire Arrays

open access: yesAdvanced Physics Research, EarlyView.
3D magnetic interconnected helical nanowire arrays are fabricated and shown to host a variety of magnetic solitons. It is observed that the magnetic reversal mechanism is repeatable and not stochastic for a consistent direction of the applied field. Additionally, changing the shape of the nanowire arrays alters the magnetic solitons that form, but the ...
John Fullerton   +2 more
wiley   +1 more source

Vorticity and Spin Polarization in Heavy Ion Collisions: Transport Models [PDF]

open access: green, 2021
Xu-Guang Huang   +3 more
openalex   +1 more source

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