Related Experiment Video
Updated: Jul 16, 2026

Visualization of Flow Field Around a Vibrating Pipeline Within an Equilibrium Scour Hole
Published on: August 26, 2019
Vibration behavior and phase velocity analysis of a vertically partially immersed cylindrical shell under axial
1Laboratoire Ondes et Milieux Complexes, LOMC UMR CNRS 6294, Normandie Université, Université Le Havre, 75 rue Bellot, CS 80540, 76058, Le Havre, France.
Abstract:
The vibroacoustic behavior of partially submerged cylindrical structures is an important topic in the marine engineering field and underwater acoustics. It is directly related to underwater noise pollution and the increasing regulatory requirements for controlling acoustic emissions from offshore constructions. In the present study, the underwater noise emissions from a partially immersed cylindrical shell are investigated. Therefore, the vibratory behavior of a stainless-steel cylindrical shell, which is subjected to an axial excitation on its emerged section, is studied numerically and experimentally over the frequency range of 1 to 150 kHz. The identification of waves that propagate along the cylindrical shell length and radiate into water is performed using a two-dimensional axisymmetric finite element model, which is implemented in COMSOL Multiphysics. The studied wave modes include the antisymmetric Lamb wave, the symmetric Lamb wave, a fluid-loaded flexural shell mode, and a bulk wave. The corresponding phase velocity dispersion curves are determined and analyzed. To validate the numerical model, experiments were conducted in a large water tank. A good agreement between numerical predictions and experimental results is observed.
More Related Videos
Related Concept Videos
Thin-Walled Hollow Shafts
Deriving the Speed of Sound in a Liquid
The speed of sound in fluids can be derived by considering a mechanical wave propagating...
Standing Waves in a Cavity
Sound as Pressure Waves
The pressure fluctuation depends on the difference in displacements between the successive points in the...
Steady, Laminar Flow in Circular Tubes
Eccentric Axial Loading in a Plane of Symmetry

