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.
Scientists from Hiroshima University undertook a study of dragonfly wings in order to better understand the relationship between a corrugated wing structure and vortex motions. They discovered that corrugated wings exhibit ...
General Physics
Jan 26, 2024
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By using a special combination of laser beams as a very fast stirrer, RIKEN physicists have created multiple vortices in a quantum photonic system and tracked their evolution. This system could be used to explore exotic new ...
Nanophysics
Nov 21, 2023
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158
For the first time, an all-RIKEN team has watched the entire life cycle of tiny magnetic whirlpools, revealing their birth, movement and death. This will be important for informing the development of future low-power memory ...
Nanophysics
Sep 16, 2021
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114
Energy-efficient spintronic devices are closer to being realized thanks to a new mechanism predicted by RIKEN physicists for converting between electrical current vortices and a spin current.
Nanophysics
Jul 14, 2021
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190
