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dc.contributor.authorRus Carlborg, Guillermo es_ES
dc.date.accessioned2016-06-01T13:32:32Z
dc.date.available2016-06-01T13:32:32Z
dc.date.issued2014
dc.identifier.citationRus Carlborg, G. Nature of acoustic nonlinear radiation stress. Applied Physics Letters, 105(12): 121904 (2014). [http://hdl.handle.net/10481/41513]es_ES
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.urihttp://hdl.handle.net/10481/41513
dc.description.abstractWhen a fluid is insonified with ultrasound, a flow consequence of a net stress becomes observable, which has been described as acoustic streaming, quartz wind, acoustic radiation force or acoustic fountain. Following Sir James Lighthill's formulation of the Reynold's streaming, these phenomena have been attributed to a cumulative viscous effect. Instead, a new multiscale effect, whereby the constitutive elastic nonlinearity scales from the ultrasonic to the macroscopic time, is here proposed and formulated to explain its origin. This raises a new term in the Navier-Stokes equation, which ultimately stems from the anharmonicity of the atomic potential. In our experimental validation, this theory is consistent in water and for a range of ultrasonic configurations, whereas the formerly established viscous theory fails by an order of magnitude. This ultrasonic-fluid interaction, called nonlinear mechanical radiation since it is able to remotely exert a stress field, correctly explains a wide range of industrial and biomedical active ultrasonic uses including jet engines, acoustic tweezers, cyanobacteria propulsion mechanisms, nanofluidics or acoustic radiation force elastography.en_EN
dc.description.sponsorshipMinisterio de Economía y Competitividad (Spain) for Project DPI2010-17065, and Junta de Andalucía for Projects P11-CTS-8089 and GGI3000IDIB.es_ES
dc.language.isoengen_EN
dc.publisherAmerican Institute of Physics (AIP)en_EN
dc.subjectAcoustic Radiationen_EN
dc.subjectUltrasounden_EN
dc.subjectUltrasonic effectsen_EN
dc.subjectSound pressureen_EN
dc.subjectReynolds stress modelingen_EN
dc.subjectVelocimetryen_EN
dc.subjectViscosity en_EN
dc.titleNature of acoustic nonlinear radiation stressen_EN
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1063/1.4894827


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