Computational modelling of acoustic scattering of a sound source in the vicinity of the ground

P. Pantazopoulou, D. Drikakis

Research output: Contribution to journalArticle

Abstract

The paper presents a computational model for acoustic scattering of a near-the-ground sound source around a body moving in a uniform flow. Using the method of images and the concept of reflection coefficient, the half space Green's function in a uniform flow is derived in the framework of the boundary element method (BEM). The method is validated against analytical solutions and is further applied in the case of acoustic scattering around an airfoil moving in the vicinity of the ground both for rigid and soft ground conditions. The results show the importance of ground impedance in the attenuation of sound.
Original languageEnglish
Pages (from-to)219-226
Number of pages8
JournalEngineering Letters
Volume17
Issue number4
Publication statusPublished - 19 Nov 2009

Keywords

  • aerofoils
  • boundary element methods
  • method of images
  • uniform flow
  • sound

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