| Issue |
EPL
Volume 88, Number 2, October 2009
|
|
|---|---|---|
| Article Number | 20006 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/88/20006 | |
| Published online | 04 November 2009 | |
Experimental observation of trapped modes in a water wave channel
1
Laboratoire de Physique et Mécanique des Milieux Hétérogènes, UMR CNRS 7636, Ecole Supérieure de Physique et de Chimie Industrielles - Paris, France, EU
2
Laboratoire d'Acoustique de l'Université du Maine, UMR CNRS 6613, Université du Maine - Le Mans, France, EU
3
Laboratoire Ondes et Acoustique, Institut Langevin, UMR CNRS 7587, Ecole Supérieure de Physique et de Chimie Industrielles - Paris, France, EU
Corresponding author: cobelli@pmmh.espci.fr
Received:
24
July
2009
Accepted:
1
October
2009
The fluid around a free surface piercing circular cylinder in a long narrow wave tank can exhibit a local oscillation that does not propagate down the channel but is confined to the vicinity of the cylinder. This is a manifestation of the so-called trapped modes, bound states in the continuum occurring in many situations in physics. In this letter, using Fourier Transform Profilometry, fully space time resolved measurements for the free surface deformation are obtained. The scattering characteristics of the cylinder and consequently the behavior of the trapped-mode frequency are determined.
PACS: 03.65.Ge – Solutions of wave equations: bound states / 43.20.Ks – Standing waves, resonance, normal modes / 47.35.Lf – Wave-structure interactions
© EPLA, 2009
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.