微小円孔のあいた界面を持つ音場の効率的な境界要素解析法 : 第2報

概要

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It is frequently important in engineering to analyze complicated acoustic problems in the case of a large number of small holes at an interface boundary. A muffler used for reduction of exhaust noise is a typical example of such a case. The boundary element method could be applied to such problems, but this analysis would require a huge number of boundary elements to obtain accurate results. To circumvent this difficulty, we propose a new boundary element method which can be applied effectively to 3-D acoustic problems with small holes on the interface boundary, governed by the Helmholtz equation. An attempt is made to improve the accuracy of the method previously proposed by us. Some improvement in computational accuracy is demonstreated through numerical computation of two sample problems.
1996-02-25