Abstract
A new method based on the flux conservation for acoustic computations in unbounded domain is presented. The domain is divided in outer and inner regions by a fictitious boundary. The inner problem is solved by a control volume finite element method while the outer flow is treated with a boundary element method. The coupling of the two sub-domains is performed using an appropriate expression for the outgoing fluxes satisfying the Sommerfeld condition. A two-dimensional configuration with a circular interface is considered to show that the method is effective. Results of this method are compared to an analytical solution and to results from the literature.
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