An efficient indirect boundary element technique for multi-frequency acoustic analysis

An e¦cient indirect boundary element solution procedure for the analysis of multi-frequency acoustic problems is developed by incorporating techniques that improve the e¦ciency of the integration and matrix solution phases of the computing process. The integration phase is made e¦cient 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 e¦cient by iterating the solutions using the factored form of the key frequency matrices. The e¤ectiveness of the present development is conÞrmed by solving a number of example problems. Copyright