Spatial Dynamics Methods for Solitary Waves on a Ferrofluid Jet

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

This paper presents existence theories for several families of axisymmetric solitary waves on the surface of an otherwise cylindrical ferrofluid jet surrounding a stationary metal rod. The ferrofluid, which is governed by a general (nonlinear) magnetisation law, is subject to an azimuthal magnetic field generated by an electric current flowing along the rod. The ferrohydrodynamic problem for axisymmetric travelling waves is formulated as an infinite-dimensional Hamiltonian system in which the axial direction is the time-like variable. A centre-manifold reduction technique is employed to reduce the system to a locally equivalent Hamiltonian system with a finite number of degrees of freedom, and homoclinic solutions to the reduced system, which correspond to solitary waves, are detected by dynamical-systems methods.

Detaljer

Författare
  • M. D. Groves
  • D. V. Nilsson
Enheter & grupper
Externa organisationer
  • Saarland University
  • Loughborough University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Matematik
  • Strömningsmekanik och akustik
Originalspråkengelska
Sidor (från-till)1427-1458
Antal sidor32
TidskriftJournal of Mathematical Fluid Mechanics
Volym20
Utgivningsnummer4
StatusPublished - 2018
PublikationskategoriForskning
Peer review utfördJa