vortex
Quick Summary
In physics, a vortex is a region in a fluid where the flow revolves around an axis line, which may be straight or curved. Vortices are a fundamental concept in fluid mechanics, appearing in various forms from small eddies to large-scale atmospheric phenomena like tornadoes.12
Key characteristics of vortices include:
* Rotation: Fluid moves rapidly in a circular or swirling pattern around a central axis.13
* Low Pressure Core: The center of a vortex typically has lower atmospheric pressure than the surrounding area.3
* Formation: Vortices can form where a fluid contacts a solid surface or at its free surface. They are also generated by temperature instabilities in the atmosphere, leading to phenomena like dust devils.23
Examples range from whirlpools and dust devils to more powerful storms. The study of vortices is crucial for understanding fluid behavior in many natural and engineered systems.123
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fluid mechanicsNavier-stokes equationā¦pattern that it represents, is vorticity. In a sample of fluid that is rotating like a solid body with uniform angular velocity Ļ0, the vorticity lies in the same direction as the axis of rotation, and its magnitude is equal to 2Ļ0. In other circumstances the vorticity is related inā¦
Read Moreā¦pattern that it represents, is vorticity. In a sample of fluid that is rotating like a solid body with uniform angular velocity Ļ0, the vorticity lies in the same direction as the axis of rotation, and its magnitude is equal to 2Ļ0. In other circumstances the vorticity is related inā¦
Read More- fluid mechanicsLift
ā¦eddy, known as the starting vortex, is still in view. The circulation around the closed loop shown by a broken curve in this diagram was zero before the eddy formed and, according to Thomsonās theorem (see above Potential flow), it must still be zero. Passing through this loop, there thusā¦
Read Moreā¦eddy, known as the starting vortex, is still in view. The circulation around the closed loop shown by a broken curve in this diagram was zero before the eddy formed and, according to Thomsonās theorem (see above Potential flow), it must still be zero. Passing through this loop, there thusā¦
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Hermann von HelmholtzEarly lifeā¦of Hydrodynamic Equations to Which Vortex Motions Conform.ā This was not only a mathematical tour de force, but, for a brief time, it also seemed to provide a key to the fundamental structure of matter. One of the consequences that flowed from Helmholtzās mathematical analysis was that vortices of anā¦
Read Moreā¦of Hydrodynamic Equations to Which Vortex Motions Conform.ā This was not only a mathematical tour de force, but, for a brief time, it also seemed to provide a key to the fundamental structure of matter. One of the consequences that flowed from Helmholtzās mathematical analysis was that vortices of anā¦
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principles of physical scienceDevelopment of the atomic theoryā¦Helmholtz of the permanence of vortex motions in perfectly inviscid fluids encouraged the inventionāthroughout the latter half of the 19th century and especially in Great Britaināof models in which vortices in a structureless ether played the part otherwise assigned to atoms. In recent years the recognition that certain localized disturbancesā¦
Read Moreā¦Helmholtz of the permanence of vortex motions in perfectly inviscid fluids encouraged the inventionāthroughout the latter half of the 19th century and especially in Great Britaināof models in which vortices in a structureless ether played the part otherwise assigned to atoms. In recent years the recognition that certain localized disturbancesā¦
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- climateWinds in the stratosphere and mesosphere
ā¦the mean, an intense cyclonic vortex about the poles in the lower stratosphere. Over the North Pole this vortex has an embedded mean trough over northeastern North America and over northeastern Asia, whereas over the Pacific there is a weak anticyclonic vortex. The winter cyclonic vortex over the South Poleā¦
Read Moreā¦the mean, an intense cyclonic vortex about the poles in the lower stratosphere. Over the North Pole this vortex has an embedded mean trough over northeastern North America and over northeastern Asia, whereas over the Pacific there is a weak anticyclonic vortex. The winter cyclonic vortex over the South Poleā¦
Read More - climatePropagation and development of waves
ā¦to rotate is known as vorticity and is given by the following equation: Ī¶ = āv/āx ā āu/āy (5) where Ī¶ is the relative vorticity with respect to Earthās surface. The variables x and y are the coordinate axes for space and correspond to the measurements to the east andā¦
Read Moreā¦to rotate is known as vorticity and is given by the following equation: Ī¶ = āv/āx ā āu/āy (5) where Ī¶ is the relative vorticity with respect to Earthās surface. The variables x and y are the coordinate axes for space and correspond to the measurements to the east andā¦
Read More - climatePropagation and development of waves
ā¦of the advection of Earthās vorticity are overwhelmed by the effects of advection of relative vorticity.
Read Moreā¦of the advection of Earthās vorticity are overwhelmed by the effects of advection of relative vorticity.
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