Vortex flows as a research area focus on fluid motion characterized by rotational structures, including isolated vortices, vortex sheets, and complex turbulent vortical fields, in gases, liquids, or plasmas. Investigations address the generation, stability, interaction, and breakdown of vortices, as well as vortex-induced transport, mixing, and momentum/energy redistribution. The field combines theoretical fluid mechanics, numerical simulation (e.g., direct numerical simulation and large-eddy simulation), and experimentation to study phenomena such as coherent structures, vortex reconnection, and transition to turbulence, with applications in aerodynamics, propulsion, geophysical and astrophysical flows, and engineering systems where control or exploitation of vorticity is critical.
Like the Earth, the sun likely has swirling polar vortices, according to new research led by the U.S. National Science Foundation National Center for Atmospheric Research (NSF NCAR). But unlike on Earth, the formation and ...
Astronomy
Nov 11, 2024
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101
Researchers from Skoltech, Universitat Politècnica de València, Institute of Spectroscopy of RAS, University of Warsaw, and University of Iceland have demonstrated the spontaneous formation and synchronization of multiple ...
Condensed Matter
Sep 3, 2024
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125
Vortex rings, a mysterious and fascinating natural phenomenon, display breathtaking structures and behaviors in both air and electromagnetic waves. Imagine an air cannon that can shoot vortex rings, creating a perfect air ...
General Physics
Aug 14, 2024
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In a study published in Nature Communications, collaborating physicists from Singapore and the UK have reported an optical analog of the Kármán vortex street (KVS). This optical KVS pulse reveals fascinating parallels between ...
Optics & Photonics
Jun 13, 2024
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355
Vortices are a common physical phenomenon. You find them in the structure of galaxies, tornadoes and hurricanes, as well as in a cup of tea, or water as it drains from the bathtub.
Optics & Photonics
Jun 6, 2024
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1310
In a research collaboration between the group of Professor Hiroshi Yokoyama of the Department of Mechanical Engineering and KOBE STEEL, LTD., flow, and acoustic fields in an expanding pipe with orifice plates were studied ...
General Physics
Apr 2, 2024
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117
Scientists have for the first time created a giant quantum vortex to mimic a black hole in superfluid helium that has allowed them to see in greater detail how analog black holes behave and interact with their surroundings.
General Physics
Mar 20, 2024
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1013
Researchers from University of Tsukuba investigated the propulsion mechanism by visualizing water flow around a swimmer during underwater dolphin-kick swimming in a water channel via particle image velocimetry. Their findings ...
General Physics
Mar 12, 2024
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224
Topological wave structures are wave patterns that exhibit specific topological properties, or in other words, properties that remain unvaried under smooth deformations of a physical system. These structures, such as vortices ...
According to a recent study from the University of Helsinki, published in the journal Physical Review Letters, a vortex of a superfluid that has been quantized four times has three ways of dividing, depending on the temperature.
General Physics
Feb 16, 2024
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