vortex; vortical motion
Technical term used in physics and fluid dynamics to describe swirling or rotational motion of a fluid.
流体力学では、渦動の発生メカニズムが研究されている。
In fluid dynamics, the mechanism of vortex generation is studied.
この装置は渦動を利用して効
This device uses vortical motion to mix efficiently.
Compound of 渦 (whirlpool) and 動 (motion), literally 'whirlpool motion'. The exact historical derivation is uncertain, but the term is used in modern technical contexts.