Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid
In several technical applications, for example, in the Arctic off-shore oil industry, it is necessary to predict waveguide properties of floating elastic plates in contact with a relatively thin layer of water, which has a non-uniform density distribution across its depth. The issue of particular co...
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ftalborgunivpubl:oai:pure.atira.dk:publications/deeed730-fab6-459b-b974-c8900f958fd1 2024-09-09T19:25:28+00:00 Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid Indeitsev, Dmitrij Sorokin, Sergey 2012 https://vbn.aau.dk/da/publications/deeed730-fab6-459b-b974-c8900f958fd1 http://www.scopus.com/inward/record.url?scp=84876220472&partnerID=8YFLogxK eng eng https://vbn.aau.dk/da/publications/deeed730-fab6-459b-b974-c8900f958fd1 info:eu-repo/semantics/restrictedAccess Indeitsev , D & Sorokin , S 2012 , Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid . in Proceedings of International Congress on Sound and Vibration, Vilnius, Lithuania . 978-609-459-079-5 , International Congress on Sound and Vibration, Vilnius, Lithuania. , Vilnius , Lithuania , 08/07/2012 . contributionToPeriodical 2012 ftalborgunivpubl 2024-07-10T12:39:07Z In several technical applications, for example, in the Arctic off-shore oil industry, it is necessary to predict waveguide properties of floating elastic plates in contact with a relatively thin layer of water, which has a non-uniform density distribution across its depth. The issue of particular concern is propagation of low-frequency waves in such a coupled waveguide. In the present paper, we assume that an inhomogeneous fluid may be modelled as two homogeneous, inviscid and incompressible layers with slightly different densities. The lighter layer of fresh water lies on top of the heavier layer of salty water. The former one produces fluid loading at the plate, whereas the latter one is bounded by the sea bottom. We employ classical asymptotic methods to identify significant regimes of wave motion in the compound three-component waveguide. The roles of parameters involved in the problem formulation, such as depths of the layers, stiffness and inertia of the plate, are assessed in several frequency ranges. Dispersion diagrams obtained from approximate dispersion relations are compared with their exact counterparts. Article in Journal/Newspaper Arctic Aalborg University's Research Portal Arctic |
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Aalborg University's Research Portal |
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ftalborgunivpubl |
language |
English |
description |
In several technical applications, for example, in the Arctic off-shore oil industry, it is necessary to predict waveguide properties of floating elastic plates in contact with a relatively thin layer of water, which has a non-uniform density distribution across its depth. The issue of particular concern is propagation of low-frequency waves in such a coupled waveguide. In the present paper, we assume that an inhomogeneous fluid may be modelled as two homogeneous, inviscid and incompressible layers with slightly different densities. The lighter layer of fresh water lies on top of the heavier layer of salty water. The former one produces fluid loading at the plate, whereas the latter one is bounded by the sea bottom. We employ classical asymptotic methods to identify significant regimes of wave motion in the compound three-component waveguide. The roles of parameters involved in the problem formulation, such as depths of the layers, stiffness and inertia of the plate, are assessed in several frequency ranges. Dispersion diagrams obtained from approximate dispersion relations are compared with their exact counterparts. |
format |
Article in Journal/Newspaper |
author |
Indeitsev, Dmitrij Sorokin, Sergey |
spellingShingle |
Indeitsev, Dmitrij Sorokin, Sergey Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid |
author_facet |
Indeitsev, Dmitrij Sorokin, Sergey |
author_sort |
Indeitsev, Dmitrij |
title |
Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid |
title_short |
Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid |
title_full |
Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid |
title_fullStr |
Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid |
title_full_unstemmed |
Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid |
title_sort |
low-frequency wave propagation in an elastic plate loaded by a two-layer fluid |
publishDate |
2012 |
url |
https://vbn.aau.dk/da/publications/deeed730-fab6-459b-b974-c8900f958fd1 http://www.scopus.com/inward/record.url?scp=84876220472&partnerID=8YFLogxK |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Indeitsev , D & Sorokin , S 2012 , Low-frequency wave propagation in an elastic plate loaded by a two-layer fluid . in Proceedings of International Congress on Sound and Vibration, Vilnius, Lithuania . 978-609-459-079-5 , International Congress on Sound and Vibration, Vilnius, Lithuania. , Vilnius , Lithuania , 08/07/2012 . |
op_relation |
https://vbn.aau.dk/da/publications/deeed730-fab6-459b-b974-c8900f958fd1 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1809895256610570240 |