This paper reviews a number of numerical methods commonly used to predict radiated noise from submerged elastic structures. These methods differ most significantly in the approach adopted for modelling both the structural response and fluid/structure coupling. In order to evaluate the performance of the different numerical schemes, numerical predictions are compared to both analytical results and experimentally measured values. These tests appear to indicate that numerical methods which exploit the eigenvalues and associated eigenmodes of the 'wet' structure provide a more accurate picture of the radiated noise patterns then do other techniques. This is especially true when the structure is loaded at a resonant frequency, although all numerical methods did produce acceptable results when off-resonant frequencies were considered.
Predicting radiated noise from submerged and floating elastic structures
Vorhersage der Schallabstrahlung von getauchten und schwimmenden elastischen Konstruktionen
1995
10 Seiten, 11 Bilder, 3 Tabellen, 16 Quellen
Conference paper
English
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