Acoustic radiation force of a solid elastic sphere immersed in a cylindrical cavity filled with ideal fluid

作者：Shi, Jingyao; Zhang, Xiaofeng; Chen, Ruimin; Zhang, Guangbin^*

来源：Wave Motion, 2018, 80: 37-46.

DOI：10.1016/j.wavemoti.2018.03.005

• Spherical particle
• Acoustic radiation force
• Fluid-filled cylindrical cavity

An expression for the acoustic radiation force function on a solid elastic spherical particle placed in an infinite rigid cylindrical cavity filled with an ideal fluid is deduced when the incident wave is a plane progressive wave propagated along the cylindrical axis. The acoustic radiation force of the spherical particle with different materials was computed to validate the theory. The simulation results demonstrate that the acoustic radiation force changes demonstrably because of the influence of the reflective acoustic wave from the cylindrical cavity. The sharp resonance peaks, which result from the resonance of the fluid-filled cylindrical cavity, appear at the same positions in the acoustic radiation force curve for the spherical particle with different radii and materials. Relative radius, which is the ratio of the sphere radius and the cylindrical cavity radius, has more influence on acoustic radiation force. Moreover, the negative radiation forces, which are opposite to the progressive directions of the plane wave, are observed at certain frequencies.

• 出版日期2018-7
• 单位陕西师范大学