| dc.contributor.author | Karasalo, Ilkka | |
| dc.contributor.author | Mattsson, Johan | |
| dc.date.accessioned | 2018-10-11T14:08:15Z | |
| dc.date.available | 2018-10-11T14:08:15Z | |
| dc.date.issued | 1997 | |
| dc.identifier | 11478 | |
| dc.identifier.govdoc | CP-45 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.12489/433 | |
| dc.description.abstract | A boundary integral equation (BIE) method as descnbed for computing the scattering of a monofrequent acoustic field by a smooth, rigid 30 object in a layered range-independent fluid-solid medium. The BIE is discretized using B-splines (BSP), point collocation and high-order numerical zntegmtzon. The drscretzzed equations are solved by an iterative method, enhanced by pre-conditioning with the LU factors of a related linear system for spline interpolation on the scatterer surface Numerical examples are given at frequencies of a few kHz, representative e.g. for a parametric transducer. The BSP method as shown to provide order-of-magnitude gains in computation times compared to a standard BEM technique with quadratic elements as frequency increases and/or accuracy requirements are tightened. | |
| dc.format | 8 p. : ill. ; digital, PDF file | |
| dc.language | English | |
| dc.publisher | NATO. SACLANTCEN | |
| dc.source | In: High Frequency Seafloor Acoustics (SACLANTCEN Conference Proceedings CP-45), 1997, pp. 283-290 | |
| dc.subject | Acoustic scattering by elastic structures | |
| dc.subject | Integral equations | |
| dc.subject | Spline theory | |
| dc.subject | Acoustic models | |
| dc.title | Numerical modelling of acoustic scattering by smooth inclusions in a layered fluid-solid medium | |
| dc.type | Papers and Articles | |
| dc.type | Conference Proceedings (CP) | |
