Journal Press India^®

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This paper presents to the solutions of the acoustic problem using dual reciprocity boundary element method (DRBEM). The acoustic propagates inside the silencer and its sound can be formulated by the three dimensional (3D) Helmholtz equation. The form of the equation is which can be solved by the integral form on the boundary. The conventional boundary element method (BEM) is not suitable for solving the acoustic problems of silencers with higher Mach number subsonic flow, due to the presence of domain integral. The dual reciprocity method (DRM) is a method that converts the domain integral into the boundary integral. Mathematical formulations discretisation form and evaluation of the integrals are described and discussed. Algorithm of the method is also presented.

Keywords

Acoustic Problem; 3D Helmholtz Equation; Dual Reciprocity Method.

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