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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2015

Three-dimensional parabolic equation model for low frequency sound propagation in irregular urban canyons

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Résumé

A three-dimensional wide-angle parabolic equation (3DPE) is used to model low frequency sound propagation in irregular urban canyons at low computational cost. This one-way wave equation is solved using the Alternating Direction Implicit method. A finite difference scheme adapted to the geometry of the urban environment is then developed. Abrupt variations of the street width are treated as a single scattering problem using the Kirchhoff approximation. Numerical results are compared with experimental data obtained on a scale model of a street. Comparisons show the ability of the 3DPE model to provide reliable transmitted fields even for large irregularities.
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Dates et versions

hal-02406129 , version 1 (12-12-2019)

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Jean-Baptiste Doc, Bertrand Lihoreau, Simon Félix, Cédric Faure, Guillaume Dubois. Three-dimensional parabolic equation model for low frequency sound propagation in irregular urban canyons. Journal of the Acoustical Society of America, 2015, 137 (1), pp.310-320. ⟨10.1121/1.4904700⟩. ⟨hal-02406129⟩
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