Normal-Mode–Vortex Interactions

Roberto Bernal (1) , Christophe Coste (2) , Fernando Lund (3, 4) , Francisco Melo (1, 4)

1 Departamento de Fisica [USACH Santiago]
2 MSC - Matière et Systèmes Complexes
3 UCHILE - Universidad de Chile = University of Chile [Santiago]
4 CIMAT - Centro para la Investigación Interdisciplinaria Avanzada en Ciencias de los Materiales- CIMAT

Standing surface waves that interact with a confined, vertical, vorticity field with zero net circulation are studied both analytically and experimentally. The surface waves are generated by vertical vibration, and constant vorticity injection is achieved by a rotating disk flush mounted in the cell. Experimental results are indicative of a local wave-vortex interaction (no dislocation), and a simple theoretical model is able to explain them in quantitative detail.

Domaines: Acoustique [physics.class-ph]

Roberto Bernal, Christophe Coste, Fernando Lund, Francisco Melo. Normal-Mode–Vortex Interactions. Physical Review Letters, 2002, 89 (3), pp.034501. ⟨10.1103/PhysRevLett.89.034501⟩. ⟨hal-01406773⟩