Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method
This paper presents a numerical model for the acoustic coupled fluid-structure interaction (FSI) of a submerged finite elastic body using the fast multipole boundary element method (FMBEM). The Helmholtz and elastodynamic boundary integral equations (BIEs) are, respectively, employed to model the ex...
| Main Authors: | , |
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| Format: | Journal Article |
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Acoustical Society of America
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/28553 |
| _version_ | 1848752568290770944 |
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| author | Wilkes, D. Duncan, Alec |
| author_facet | Wilkes, D. Duncan, Alec |
| author_sort | Wilkes, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper presents a numerical model for the acoustic coupled fluid-structure interaction (FSI) of a submerged finite elastic body using the fast multipole boundary element method (FMBEM). The Helmholtz and elastodynamic boundary integral equations (BIEs) are, respectively, employed to model the exterior fluid and interior solid domains, and the pressure and displacement unknowns are coupled between conforming meshes at the shared boundary interface to achieve the acoustic FSI. The low frequency FMBEM is applied to both BIEs to reduce the algorithmic complexity of the iterative solution from O (N 2) to O (N 1.5) operations per matrix-vector product for N boundary unknowns. Numerical examples are presented to demonstrate the algorithmic and memory complexity of the method, which are shown to be in good agreement with the theoretical estimates, while the solution accuracy is comparable to that achieved by a conventional finite element-boundary element FSI model. |
| first_indexed | 2025-11-14T08:10:41Z |
| format | Journal Article |
| id | curtin-20.500.11937-28553 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:10:41Z |
| publishDate | 2015 |
| publisher | Acoustical Society of America |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-285532017-09-13T15:20:31Z Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method Wilkes, D. Duncan, Alec This paper presents a numerical model for the acoustic coupled fluid-structure interaction (FSI) of a submerged finite elastic body using the fast multipole boundary element method (FMBEM). The Helmholtz and elastodynamic boundary integral equations (BIEs) are, respectively, employed to model the exterior fluid and interior solid domains, and the pressure and displacement unknowns are coupled between conforming meshes at the shared boundary interface to achieve the acoustic FSI. The low frequency FMBEM is applied to both BIEs to reduce the algorithmic complexity of the iterative solution from O (N 2) to O (N 1.5) operations per matrix-vector product for N boundary unknowns. Numerical examples are presented to demonstrate the algorithmic and memory complexity of the method, which are shown to be in good agreement with the theoretical estimates, while the solution accuracy is comparable to that achieved by a conventional finite element-boundary element FSI model. 2015 Journal Article http://hdl.handle.net/20.500.11937/28553 10.1121/1.4916603 Acoustical Society of America restricted |
| spellingShingle | Wilkes, D. Duncan, Alec Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method |
| title | Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method |
| title_full | Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method |
| title_fullStr | Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method |
| title_full_unstemmed | Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method |
| title_short | Acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method |
| title_sort | acoustic coupled fluid-structure interactions using a unified fast multipole boundary element method |
| url | http://hdl.handle.net/20.500.11937/28553 |