

	Mechanics På svenska

Project

Theoretical investigations of underwater sound

Research Area:

Theoretical and computational mechanics

Project Members:

Enflo, B.O.

Sandqvist, H.

Sponsor:

TFR

Project Description

The project is to study theoretically the propagation of underwater sound under conditions similar to those occurring in realistic applications. That means that refraction and the stratification of the medium are taken into account. Nonlinear effects are taken into account: low frequency narrow beams are assumed to be produced by nonlinear interaction of fundamental monochromatic waves (so called parametric radiators). Attempts are made to find, numerically and analytically, solutions of generalizations of Burgers` equation, which describe sound beams in dispersive and inhomogeneous media.

Publications related to the project

Year	Title
1999	A shock wave in a bubbly fluid Scientific/Technical Report No. 429904, Department of Telecommunications, Norwegian University of Science and Technology. Proceedings of the 22nd Scandinavian Symposium on Physical Acoustics, 31 Jan.-3 Feb. 1999 37-38 (Published)
1998	Shockwaves in a dispersive medium Scientific/Technical Report No. 1998 - 04, Department of Physics, University of Bergen. Proceedings of the 21st Scandinavian Symposium on Physical Acoustics, 1-4 Feb. 1998 41-42 (Published)

Internal Reports related to the project

Year	Title	Document Type