A conjugated infinite element method for half-space acoustic problems.
Many acoustic problems (especially in environmental acoustics) involve half-space domains bounded by a plane subjected to normal admittance boundary conditions. In the "low" frequency domain, the numerical treatment of such problems usually relies on boundary element methods based on a particular Green's function suited for the half-(admittance) plane. In the present paper, an alternative hybrid finite/infinite element scheme is proposed. The method relies on a direct treatment of nonhomogeneous boundary conditions along infinite element edges (or faces). The procedure is validated through comparisons with an available reference solution.
Coyette
J P
JP
Civil Engineering Department, Université catholique de Louvain, Louvain-la-Neuve, Belgium. jean-pierre.coyette@fft.be
Van den Nieuwenhof
B
B
D000162:Acoustics; D020342:Finite Element Analysis; D006801:Humans; D015233:Models, Statistical; D012542:Scattering, Radiation; D013018:Sound Spectrography