2014/09/09 by Clifford Chafin, Chafin, Clifford · 2 citations
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Acoustic Wave Phenomena Research #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Scientific Research and Discoveries #Underwater Acoustics Research
paper · pdf · doi:10.48550/arxiv.1409.2797
openalex publication_date 2014/09/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Inviscid hydrodynamics mediates forces through pressure and other, typically irrotational, external forces. Acoustically induced forces must be consistent with arising from such a pressure field. The use of "acoustic stress" is shown to have inconsistencies with such an analysis and generally arise from mathematical expediency but poor overall conceptualization of such systems. This contention is further supported by the poor agreement of experiment in many such approaches. The notion of momentum as being an intrinsic property of sound waves is similarly found to be paradoxical. Through an analysis that includes viscosity and attenuation, we conclude that all acoustic streaming must arise from vorticity introduced by viscous forces at the driver or other solid boundaries and that calculations with acoustic stress should be replaced with ones using a nonlinear correction to the overall pressure field.