vortex - ορισμός. Τι είναι το vortex
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Τι (ποιος) είναι vortex - ορισμός

FLUID FLOW REVOLVING AROUND AN AXIS OF ROTATION
Vortical; Vortices; Vortexing; Forced vortex; Free vortex; Free-vortex; Forced-vortex; Vortexes; Irrotational vortex; Irrotational vortices
  • C-17]] uses high engine power at slow speed on a wet runway.
  • animation]].)
  • An irrotational vortex
  • Vortices formed by milk when poured into a cup of coffee
  • A rigid-body vortex
  • Saturn's]] north polar vortex
  • A plughole vortex
  • [[Kármán vortex street]]s formed off the island of [[Tristan da Cunha]]
  • A [[Kármán vortex street]] is demonstrated in this photo, as winds from the west blow onto clouds that have formed over the mountains in the desert. This phenomenon observed from ground level is extremely rare, as most cloud-related Kármán vortex street activity is viewed from space

vortex         
  • A Doppler on Wheels radar loop of the tornado intercepted on June 5.
  • VORTEX2 field command vehicle with tornado in sight. Wyoming, LaGrange. 2009
  • NSSL]]).
U.S. TORNADO MEASUREMENT CAMPAIGNS
VORTEX; Verification of the Origins of Rotation in Tornadoes Experiment; VORTEX Project; VORTEX2; VORTEX project; Vortex 2; VORTEX1; SUB-VORTEX; VORTEX-99; VORTEX-Southeast; VORTEX-SE; Project VORTEX
n. to draw into a vortex
Vortex         
  • A Doppler on Wheels radar loop of the tornado intercepted on June 5.
  • VORTEX2 field command vehicle with tornado in sight. Wyoming, LaGrange. 2009
  • NSSL]]).
U.S. TORNADO MEASUREMENT CAMPAIGNS
VORTEX; Verification of the Origins of Rotation in Tornadoes Experiment; VORTEX Project; VORTEX2; VORTEX project; Vortex 2; VORTEX1; SUB-VORTEX; VORTEX-99; VORTEX-Southeast; VORTEX-SE; Project VORTEX
·noun Any one of numerous species of small Turbellaria belonging to Vortex and allied genera. ·see Illustration in Appendix.
II. Vortex ·noun A supposed collection of particles of very subtile matter, endowed with a rapid rotary motion around an axis which was also the axis of a sun or a planet. Descartes attempted to account for the formation of the universe, and the movements of the bodies composing it, by a theory of vortices.
III. Vortex ·noun A mass of fluid, especially of a liquid, having a whirling or circular motion tending to form a cavity or vacuum in the center of the circle, and to draw in towards the center bodies subject to its action; the form assumed by a fluid in such motion; a whirlpool; an Eddy.
vortex         
  • A Doppler on Wheels radar loop of the tornado intercepted on June 5.
  • VORTEX2 field command vehicle with tornado in sight. Wyoming, LaGrange. 2009
  • NSSL]]).
U.S. TORNADO MEASUREMENT CAMPAIGNS
VORTEX; Verification of the Origins of Rotation in Tornadoes Experiment; VORTEX Project; VORTEX2; VORTEX project; Vortex 2; VORTEX1; SUB-VORTEX; VORTEX-99; VORTEX-Southeast; VORTEX-SE; Project VORTEX
['v?:t?ks]
¦ noun (plural vortexes or vortices -t?si:z) a whirling mass, especially a whirlpool or whirlwind.
Derivatives
vortical adjective
vortically adverb
vorticity v?:'t?s?ti noun
vorticose adjective
vorticular v?:'t?kj?l? adjective
Origin
C17: from L. vortex, vortic-, lit. 'eddy', var. of vertex.

Βικιπαίδεια

Vortex

In fluid dynamics, a vortex (PL: vortices or vortexes) is a region in a fluid in which the flow revolves around an axis line, which may be straight or curved. Vortices form in stirred fluids, and may be observed in smoke rings, whirlpools in the wake of a boat, and the winds surrounding a tropical cyclone, tornado or dust devil.

Vortices are a major component of turbulent flow. The distribution of velocity, vorticity (the curl of the flow velocity), as well as the concept of circulation are used to characterise vortices. In most vortices, the fluid flow velocity is greatest next to its axis and decreases in inverse proportion to the distance from the axis.

In the absence of external forces, viscous friction within the fluid tends to organise the flow into a collection of irrotational vortices, possibly superimposed to larger-scale flows, including larger-scale vortices. Once formed, vortices can move, stretch, twist, and interact in complex ways. A moving vortex carries some angular and linear momentum, energy, and mass, with it.

Παραδείγματα από το σώμα κειμένου για vortex
1. But escaping that vortex will not be easy, analysts say.
2. It was this overwhelming and emotional response and it was like being in a vortex.
3. In 1''1, I was in a Noel Coward play, The Vortex.
4. Out of this vortex of religious fervour emerged Osama Bin Laden and his terrorism.
5. More air is sucked in and begins to rotate, creating a vortex of swirling wind.