Results 51 to 60 of about 56,251 (190)

New Theories on Boundary Layer Transition and Turbulence Formation

open access: yesModelling and Simulation in Engineering, 2012
This paper is a short review of our recent DNS work on physics of late boundary layer transition and turbulence. Based on our DNS observation, we propose a new theory on boundary layer transition, which has five steps, that is, receptivity, linear ...
Chaoqun Liu   +3 more
doaj   +1 more source

Vortex filaments and quantum turbulence

open access: yesComptes Rendus. Mécanique, 2020
After giving my personal recollections of my collaboration in the early 90’s with Yves Couder on the subject of vortex filaments in classical turbulence I argue that current insights in quantum turbulence can be used to shed some light on the problem of ...
Brachet, Marc
doaj   +1 more source

Augmenting the Structures in a Swirling Flame via Diffusive Injection

open access: yesJournal of Combustion, 2014
Small scale experimentation using particle image velocimetry investigated the effect of the diffusive injection of methane, air, and carbon dioxide on the coherent structures in a swirling flame.
Jonathan Lewis   +3 more
doaj   +1 more source

Suppression of the superfluid Kelvin-Helmholtz instability due to massive vortex cores, friction and confinement

open access: yesSciPost Physics
We characterize the dynamical instability responsible for the breakdown of regular rows and necklaces of quantized vortices that appear at the interface between two superfluids in relative motion.
Matteo Caldara, Andrea Richaud, Massimo Capone, Pietro Massignan
doaj   +1 more source

Unsteadiness of Tip Leakage Flow in the Detached-Eddy Simulation on a Transonic Rotor with Vortex Breakdown Phenomenon

open access: yesEnergies, 2019
Tip leakage vortex (TLV) in a transonic compressor rotor was investigated numerically using detached-eddy simulation (DES) method at different working conditions.
Xiangyu Su   +3 more
doaj   +1 more source

Experimental study of a vortex subjected to imposed strain [PDF]

open access: yes
An experimental project was undertaken to investigate the character of vortex breakdown with particular regard to the waveguide theories of vortex breakdown.
Panton, Ronald L., Stifle, Kirk E.
core   +1 more source

Criterion for transformation of transverse domain wall to vortex or antivortex wall in soft magnetic thin-film nanostripes [PDF]

open access: yes, 2008
We report on the criterion for the dynamic transformation of the internal structure of moving domain walls (DWs) in soft magnetic thin-film nanostripes above the Walker threshold field, Hw. In order for the process of transformation from transverse wall (
J.-Y. Lee   +8 more
core   +2 more sources

Numerical Investigations into the Origin of Tip Unsteadiness in a Transonic Compressor

open access: yesJournal of Applied Fluid Mechanics, 2018
Three-dimensional numerical simulations are conducted to investigate the origin of flow unsteadiness and its associated unsteady flow phenomena in a transonic compressor rotor. The predicted results are compared with the available experimental data and a
G. An, Y. Wu, J. Lang, Z. Chen, B. Wang
doaj  

Analysis of the breakdown of the Antarctic circumpolar vortex using TOMS ozone data [PDF]

open access: yes
Climatological analysis of data from the Total Ozone Mapping Spectrometer (TOMS) on the Nimbus 7 satellite has shown that the annual cycles of ozone are very different in the Arctic and Antarctic.
Bowman, Kenneth P.
core   +1 more source

Polar Vortex Disruptions by High Latitude Ocean Warming

open access: yesGeophysical Research Letters
Mid‐latitude extreme cold outbreaks are associated with disruptions of the polar vortex, which often happen abruptly in connection to a sudden stratospheric warming.
Mostafa E. Hamouda   +2 more
doaj   +1 more source

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