Graduate School in Nonlinear Science

Sponsored by The Danish ResearchAgency

 
MIDIT                              OFD                          CATS
Modelling, Nonlinear Dynamics      Optics and Fluid Dynamics    Chaos and Turbulence Studies
and Irreversible Thermodynamics    Risø National Laboratory     Niels Bohr Institute and
Technical University of Denmark    Building 128                 Department of Chemistry
Building 321                       P.O. Box 49                  University of Copenhagen
DK-2800 Lyngby                     DK-4000 Roskilde             DK-2100 Copenhagen Ø
Denmark                            Denmark                      Denmark

NONLINEAR WAVE PROPAGATION IN DEFORMED CHANNELS: TWO EXAMPLES

by J G Caputo
Laboratoire de Mathematiques, INSA de Rouen,
B.P. 8, 76131 Mont-Saint-Aignan cedex, France.
E-mail: caputo@insa-rouen.fr

Laboratoire de Physique theorique et modelisation,
Universite de Cergy-Pontoise and C.N.R.S.

MIDIT-seminar 510

Wednesday, August 21, 2002, 14.00 h
at IMM, Bldg. 305, Room 053, DTU

Abstract: Nonlinear waves in bounded domains are complicated to study because of the boundary conditions and the nonlinearity. For a wave-guide, a variation of the cross-section can strongly influence the propagation of nonlinear waves. We will illustrate this in two examples, the propagation of flux quanta in a tapered Josephson junction used as a high frequency oscillator and the motion of a hydraulic jump (tidal bore) in a channel of variable depth or width.