Acoustic radiation force on coated cylinders in plane progressive waves

Abstract

The purpose of this paper is to present the theory of the static acoustic radiation force on layered cylinders. The frequency dependence of the acoustic radiation force function Y p (which is the radiation force per unit energy density and unit cross-sectional surface) for coated cylinders suspended in an incident plane wave sound field is analyzed, in relation to the thickness of the outer covering layer and the surrounding fluid. Explicit numerical calculations are presented for layered lossless cylinders immersed in water. The fluid-loading effect on the radiation force function curves is also analyzed by considering a high-density fluid surrounding the cylinders. These results show how absorption and the exterior fluid surrounding the cylinders affect the acoustic radiation force. It is shown here that the theory developed is much broader in scope compared to other existing theories.