Acoustic radiation force on a rigid cylinder near rigid corner boundaries exerted by a Gaussian beam field

Acoustic manipulation is one of the well-known technologies of particle control and a top research in acoustic field. Calculation of acoustic radiation force on a particle nearby boundaries is one of the critical tasks, as it approximates realistic applications. Nevertheless, it is quite difficult to solve the problem by theoretical method when the boundary conditions are intricate. In this study, we present a finite element method numerical model for the acoustic radiation force exerting on a rigid cylindrical particle immersed in fluid near a rigid corner. The effects of the boundaries on acoustic radiation force of a rigid cylinder are analyzed with particular emphasis on the non-dimensional frequency and the distance from the center of cylinder to each boundary. The results reveal that these parameters play important roles in acoustic manipulation for particle-nearby complicated rigid boundaries. This study verifies the feasibility of numerical analysis on the issue of acoustic radiation force calculation close to complex boundaries, which may provide a new idea on analyzing the acoustic particle manipulation in confined space.

Automated summary

Acoustic manipulation is an important area of research, and the calculation of acoustic radiation force on a particle near boundaries is a critical task. In this study, a finite element method numerical model is presented to analyze the acoustic radiation force on a rigid cylindrical particle immersed in fluid near a rigid corner. The effects of boundaries on the force are investigated, with emphasis on the non-dimensional frequency and the distance to each boundary. The results demonstrate the importance of these parameters in acoustic manipulation near complex boundaries.