ASA 126th Meeting Denver 1993 October 4-8

3aSA9. Focusing of sound power flow for sound incident on a structure in water.

Robert Hickling

Natl. Ctr. for Phys. Acoust., Univ. of Mississippi, University, MS 38677

Computation of sound-power flow for sound waves incident on a solid sphere in water shows various degrees of focusing along the axis and in the wake of the sphere depending on the material properties of the sphere. This contrasts with a rigid immovable sphere that has no sound-power flow inside and a shadow zone in the wake. Visualizations are presented that show the focusing effect as a function of frequency for a number of different materials.