Finite Element Modeling of Hydrodynamic Noise Arising in a Flow Around Elastic Bodies

A finite element method is presented for calculating hydrodynamic noise excited by turbulent fluid fluctuations in the presence of an elastic body. The conventional approach to solving this problem by direct solution of the Lighthill equation requires a large amount of calculations. It is demonstrat...

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Bibliographic Details
Published inAcoustical physics Vol. 69; no. 6; pp. 815 - 822
Main Authors Suvorov, A. S., Sokov, E. M., Virovlyansky, A. L., Eremeev, V. O., Balakireva, N. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2023
Springer Nature B.V
Subjects
Acoustics
Aeroacoustics
Elastic bodies
Finite element method
Fluid flow
Incompressible flow
Incompressible fluids
Mathematical analysis
Ocean Acoustics. Hydroacoustics
Physics
Physics and Astronomy
finite element modeling
hydrodynamic noise
sound emission
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Summary:A finite element method is presented for calculating hydrodynamic noise excited by turbulent fluid fluctuations in the presence of an elastic body. The conventional approach to solving this problem by direct solution of the Lighthill equation requires a large amount of calculations. It is demonstrated that the situation is considerably simplified when noise components are calculated at relatively low frequencies, which correspond to wavelengths that exceed the dimensions of the turbulent zone. In this case, the noise field can be expressed in terms of turbulent fluctuations in pressure on the surface of an elastic body, which is found in the incompressible fluid approximation. The article is based on a report presented at the IX Russian Conference “Computational Experiment in Aeroacoustics and Aerodynamics,” Svetlogorsk, September 26–October 1, 2022.
ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771023601206