Radiation pressure on an inclusion in a viscous barotropic fluid: Relationship with scattering amplitude

The mean force component acting on an inhomogeneity in a homogeneous medium because of the combined effect of the incident and scattered acoustic fields is considered. The calculation of this component is reduced to solving a linear scattering problem. The other mean force component, whose action on the inclusion is caused by acoustic streaming, is ignored. The use of this approach requires preliminary calculation of the scattering amplitude of the inclusion in a real medium. The approach suggests the possibility of calculating the aforementioned mean force component in an arbitrary incident field for an arbitrary scattering amplitude of the inclusion.