title: A conjugated infinite element method for half-space acoustic problems.
abstract: 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.
authors.affiliation: Civil Engineering Department, Université catholique de Louvain, Louvain-la-Neuve, Belgium. jean-pierre.coyette@fft.be
authors.forename: J P
authors.initials: JP
authors.lastname: Coyette
authors.forename: B
authors.initials: B
authors.lastname: Van den Nieuwenhof
mesh_terms: D000162:Acoustics; D020342:Finite Element Analysis; D006801:Humans; D015233:Models, Statistical; D012542:Scattering, Radiation; D013018:Sound Spectrography