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ZIGZAG INSTABILITY [1 record]

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Record 1 1994-08-01

English

Subject field(s)
  • Mathematics
  • Physics
CONT

The isotropy of the Rayleigh mechanism in the horizontal plane makes rolls neutral with respect to a local rotation. The second phase instability is associated with this invariance property. Leading to an undulation of the rolls along their axis (i.e., in a direction perpendicular to that of the wavevector) it is called the zigzag instability (subscript "ZZ").

French

Domaine(s)
  • Mathématiques
  • Physique
CONT

Par suite de l'isotropie du mécanisme de Rayleigh dans le plan horizontal, les rouleaux sont marginalement stables vis- à-vis d'une rotation locale. La deuxième instabilité de phase est associée à cette propriété d'invariance et conduit à une ondulation des rouleaux le long de leur axe (dans la direction perpendiculaire à celle du vecteur d'onde), d'où le nom d'instabilité zigzag.

Spanish

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