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Vortex shedding as winds pass Heard Island (bottom left) in the southern Indian Ocean resulted in this Kármán vortex street in the clouds In fluid dynamics , vortex shedding is an oscillating flow that takes place when a fluid such as air or water flows past a bluff (as opposed to streamlined) body at certain velocities, depending on the size ...
Visualisation of the vortex street behind a circular cylinder in air; the flow is made visible through release of glycerol vapour in the air near the cylinder. In fluid dynamics, a Kármán vortex street (or a von Kármán vortex street) is a repeating pattern of swirling vortices, caused by a process known as vortex shedding, which is responsible for the unsteady separation of flow of a fluid ...
In general, vortex lines (in particular, the axis line) are either closed loops or end at the boundary of the fluid. A whirlpool is an example of the latter, namely a vortex in a body of water whose axis ends at the free surface. A vortex tube whose vortex lines are all closed will be a closed torus-like surface.
Another effect of boundary layer separation is regular shedding vortices, known as a Kármán vortex street. Vortices shed from the bluff downstream surface of a structure at a frequency depending on the speed of the flow. Vortex shedding produces an alternating force which can lead to vibrations in the structure.
The roughly 3,672-square-kilometer (1,418-square-mile) chunk of ice — slightly bigger than Rhode Island and more than twice the size of the city of London — drifted over a seamount and got ...
Image showing formation of vortices behind the leading edge of a delta wing at high angle of attack A cloud of smoke shows the roll-up of the vortex sheet shed from the whole trailing edge of a wing producing lift from attached flow, with its core aligned with the wing tip. Vortex lift has an additional vortex close to the body when shed by a ...
An illustration of the polar jet stream and the polar vortex in the layers of atmosphere above the northern hemisphere shows the elongated shape of the vortex on Jan. 16, 2025.
This phenomenon is naturally observed behind large emergent rocks in swift-flowing rivers. An eddy is a movement of fluid that deviates from the general flow of the fluid. An example for an eddy is a vortex which produces such deviation. However, there are other types of eddies that are not simple vortices.