In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid is in a turbulent flow regime. The moving fluid creates a space devoid of downstream-flowing fluid
Reynolds Experiment (1883). Osborne Reynolds standing beside his apparatus.
Schlieren photograph showing the thermal convection plume rising from an ordinary candle in still air. The plume is initially laminar, but transition to turbulence occurs in the upper third of the image. The image was made by Gary Settles using a one-meter-diameter schlieren mirror.
Downwind of obstacles, in this case, the Madeira and the Canary Islands off the west African coast, eddies create turbulent patterns called vortex streets.
A whirlpool is a body of rotating water produced by opposing currents or a current running into an obstacle. Miniature whirlpools form when a bath or a sink is draining. More powerful ones formed in s
Eddy (fluid dynamics)
…Kármán vortex street Whirlpool Whirlwind…
The Gulf of Corryvreckan whirlpool in Scotland is the third-largest whirlpool in the world.
A whirlpool in a glass of water