TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

STRETCHING VORTEX [1 record]

Record 1 2004-10-28

English

Subject field(s)
  • Atmospheric Physics
  • Fluid Mechanics and Hydraulics (Physics)
DEF

Expansion of a fluid, and hence of its embedded vortex lines or tubes, in the direction of the axis about which spin is concentrated.

OBS

In the absence of a density change this leads to a contraction of the fluid in the plane normal to the axis of spin, and the vorticity of the fluid increases to conserve its angular momentum.

Key term(s)
  • stretching of vortex

French

Domaine(s)
  • Physique de l'atmosphère
  • Mécanique des fluides et hydraulique (Physique)
DEF

Dilatation d'un fluide (et donc de ses lignes de tourbillon) dans la direction de l'axe de rotation.

OBS

En l'absence d'un changement de densité, cela entraîne une contraction du fluide dans le plan normal à l'axe de rotation; le rotationnel du fluide augmente pour conserver son moment angulaire.

Spanish

Campo(s) temático(s)
  • Física de la atmósfera
  • Mecánica de fluidos e hidráulica (Física)
DEF

Alargamiento de un fluido (y por consiguiente de sus líneas de vorticidad) en la dirección del eje de rotación.

OBS

En ausencia de un cambio de densidad, conduce a una contracción del fluido en el plano normal al eje de giro; la vorticidad del fluido aumenta para conservar su momento angular.

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