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Absorption of intense regular and noise waves in relaxing media
Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, Avdelningen för maskinteknik.
2014 (engelsk)Inngår i: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 60, nr 5, s. 499-505Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

An integro-differential equation is written down that contains terms responsible for nonlinear absorption, visco-heat-conducting dissipation, and relaxation processes in a medium. A general integral expression is obtained for calculating energy losses of the wave with arbitrary characteristics-intensity, profile (frequency spectrum), and kernel describing the internal dynamics of the medium. It is shown that for weak waves, the general integral leads to well-known results of a linear approximation. Profiles of stationary solutions are constructed both for an exponential relaxation kernel and for other types of kernels. Energy losses at the front of week shock waves are calculated. General integral formulas are obtained for energy losses of intense noise, which are determined by the form of the kernel, the structure of the noise correlation function, and the mean square of the derivative of realization of a random process

sted, utgiver, år, opplag, sider
Maik Nauka/Springer , 2014. Vol. 60, nr 5, s. 499-505
HSV kategori
Identifikatorer
URN: urn:nbn:se:bth-6458DOI: 10.1134/S106377101405011XISI: 000342210200001Lokal ID: oai:bth.se:forskinfo17CEF22FAE00930AC1257DA5004732B6OAI: oai:DiVA.org:bth-6458DiVA, id: diva2:833966
Tilgjengelig fra: 2015-01-02 Laget: 2014-12-05 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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