Computational modelling of acoustic scattering of a sound source in the vicinity of the ground
Date published
2009-12-31T00:00:00Z
Free to read from
Supervisor/s
Journal Title
Journal ISSN
Volume Title
Publisher
International Association of Engineers
Department
Type
Article
ISSN
1816-093X
Format
Citation
Panagiota Pantazopoulou and Dimitris Drikakis. Computational modelling of acoustic scattering of a sound source in the vicinity
of the ground. Engineering Letters, 17:4, pp219-226
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.