vortex

i. In meteorology, any rotary flow in the atmosphere.
ii. As used in aerodynamics, circular patterns of air created by the movement of an airfoil through the air when generating lift. As an airfoil moves through the atmosphere in sustained flight, an area of low pressure is created above it. The air flowing from the high-pressure area to the low-pressure area around and about the tips of the airfoil tends to roll up into two rapidly rotating vortices, cylindrical in shape. These vortices are the most predominant parts of aircraft wake turbulence, and their rotational force is dependent upon the wing loading, gross weight, and speed of the generating aircraft. The most important factor is weight. The greatest vortex strength occurs when the generating aircraft is heavy, clean, and slow. This situation occurs soon after a takeoff. Peak vortex tangential speeds of 300 ft/s have been recorded. A vortex can induce roll and, in rare cases, cause structural damage to the aircraft that is following the aircraft generating the vortex. The vortices from medium and heavy aircraft can be extremely hazardous to smaller aircraft, especially during takeoff and landing behind the larger aircraft.
Vortex streamline flow.

Aviation dictionary. 2014.

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  • VORTEX — En mécanique des fluides, on appelle vortex un type de tourbillon dans lequel la vitesse des particules du fluide en chaque point est inversement proportionnelle à la distance entre le point et le centre du tourbillon. Un tel tourbillon est… …   Encyclopédie Universelle

  • Vortex — bezeichnet in der Strömungslehre ein Synonym für Wirbel, siehe Wirbel (Strömungslehre) in der Teichfiltertechnik eine mechanische Reinigungskammer, in der sich durch Schwerkraft größere Partikel absetzen und ausgefiltert werden können in der… …   Deutsch Wikipedia

  • Vortex — Vor tex, n.; pl. E. {Vortexes}, L. {Vortices}. [L. vortex, vertex, icis, fr. vortere, vertere, to turn. See {Vertex}.] [1913 Webster] 1. A mass of fluid, especially of a liquid, having a whirling or circular motion tending to form a cavity or… …   The Collaborative International Dictionary of English

  • Vortex — (англ.)  вихрь, круговорот: Музыка Arida Vortex  московская пауэр метал группа. ICS Vortex VORTEX the GazettE single Игры Vortex Software  британская компания, разработчик видеоигр. Техника Vortex86  процессор …   Википедия

  • vortex — vórtex s. n. Trimis de siveco, 24.09.2005. Sursa: Dicţionar ortografic  vórtex s. n. 1. Structură anatomică (muşchi, peri) dispusă în vârtej. 2. Vârtej cu antrenare de aer, care apare la aspiraţia apei dintr un bazin. (‹ fr., lat. vortex).… …   Dicționar Român

  • vortex — efecto de remolino producido por el giro de una masa de fluido más o menos cilíndrica. Aparato de laboratorio para homogeneizar muestras Diccionario ilustrado de Términos Médicos.. Alvaro Galiano. 2010. vórtex Efecto de remolino producid …   Diccionario médico

  • vortex — 1650s, whirlpool, eddying mass, from L. vortex, variant of vertex an eddy of water, wind, or flame; whirlpool; whirlwind, from stem of vertere to turn (see VERSUS (Cf. versus)). Plural form is vortices. Became prominent in 17c. theories of… …   Etymology dictionary

  • vortex — [vôr′teks΄] n. pl. vortexes or vortices [vôr′tə sēz΄] [L vortex, var. of vertex: see VERTEX] 1. a whirling mass of water forming a vacuum at its center, into which anything caught in the motion is drawn; whirlpool 2. a whirl or powerful eddy of… …   English World dictionary

  • Vortex — (lat.), 1) so v.w. Vertex; 2) Wirbel, Strudel, Knäuel; V. cartesianus, Cartesianischer Wirbel, s.d.; 3) V. purulentus, Eiterstock …   Pierer's Universal-Lexikon

  • vortex — *eddy, whirlpool, maelstrom …   New Dictionary of Synonyms

  • vortex — has the plural form vortexes in general use, but vortices (pronounced vaw ti seez) in technical contexts …   Modern English usage

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