Acoustic radiation torque on a particle in a fluid:An angular spectrum based compact expression
Gong, Z. (Zhixiong), Baudoin, M. (Michael)
Abstract
In this work, a set of compact analytical formulas is derived expressing the three-dimensional acoustic radiation torque (ART) exerted on a particle of arbitrary shape embedded in a fluid and insonified by an arbitrary acoustic field. This formulation enables direct computation of the ART from the angular spectrum based beam shape coefficients introduced by Sapozhnikov and Bailey [J. Acoust. Soc. Am. 133, 661-676 (2013)] and the partial wave coefficients. It is particularly well suited to determine the ART exerted on a particle when the acoustic field is known in a source plane.
Topics & Concepts
Angular spectrum methodPhysicsComputationTorqueRadiationAcoustic radiation forceAcoustic radiationPlane waveSpectrum (functional analysis)Particle (ecology)AcousticsField (mathematics)Plane (geometry)Classical mechanicsOpticsComputational physicsGeometryMathematicsUltrasoundQuantum mechanicsDiffractionAlgorithmOceanographyGeologyPure mathematicsMicrofluidic and Bio-sensing TechnologiesElectrostatics and Colloid InteractionsOrbital Angular Momentum in Optics