Related Experiment Videos
Acoustic radiation pressure in a three-dimensional lossy medium
1Department of Physiology and Biophysics, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA.
The Journal of the Acoustical Society of America
|August 1, 1996
Summary
This study presents a new method to calculate acoustic radiation pressure in lossy media. The derived formula simplifies calculations by relating pressure to energy density, even with complex acoustic waves.
Area of Science:
- Acoustics
- Fluid Dynamics
- Wave Propagation
Background:
- Acoustic radiation pressure is a fundamental concept in acoustics.
- Calculating this pressure in lossy media with arbitrary waves presents significant challenges.
- Existing methods often require complex fluid motion equations.
Purpose of the Study:
- To develop a general analytic expression for acoustic radiation pressure in three-dimensional lossy media.
- To extend the indirect approach of Chu and Apfel to lossy environments.
- To simplify the computation of radiation pressure for arbitrary acoustic waves.
Main Methods:
- Extending the indirect approach of Chu and Apfel.
- Deriving a general analytic expression for radiation pressure without solving fluid motion equations.
- Analyzing the pressure in infinite lossy media and confined spaces.
Main Results:
- A general analytic expression for acoustic radiation pressure in lossy media was obtained.
- In infinite lossy media, the second-order radiation pressure equals the total energy density.
- A generalized formula for confined spaces relates radiation pressure to various energy densities.
Conclusions:
- The study provides a simplified method for calculating acoustic radiation pressure in lossy media.
- The findings are applicable to arbitrary acoustic waves and complex media.
- The generalized energy density relationship allows computation using only first-order perturbation solutions.