Author(s)

S.T. Raveendra and M.B. Konno

Abstract

An indirect boundary element method is developed for the solution of peri- odic acoustic problems with impedance boundary condition. This is accom- plished by developing additional integral equations based on the relationship between the surface potentials and impedance values. A beneficial feature of this development is that it eliminates the irregular behavior of the ex- terior periodic acoustic solution when the solution frequency matches the eigenfrequency of the corresponding interior acoustic problem. The validity of the formulation as well as its usefulness in effectively dealing with the irregular frequency situation are demonstrated by solving suitable example problems. 1 Introduction The b

Keywords