An efficient indirect boundary element technique for multi-frequency acoustic analysis. (English) Zbl 0924.76073
Summary: An efficient indirect boundary element solution procedure for the analysis of multi-frequency acoustic problems is developed by incorporating techniques that improve the efficiency of the integration and matrix solution phases of the computing process. The integration phase is made efficient by computing the system matrices at few predetermined key frequencies only, and then evaluating the matrices at other intermediate frequencies by quadratic interpolation. The matrix solution process is made efficient by iterating the solutions using the factored form of the key frequency matrices. We confirm the effectiveness of the present development by solving a number of example problems.
MSC:
| 76M15 | Boundary element methods applied to problems in fluid mechanics |
| 76Q05 | Hydro- and aero-acoustics |
Keywords:
integration phase; quadratic interpolation; matrix solution process; key frequency matricesReferences:
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