Abstract:

The interaction of acoustic waves with a scattering object in a stochastic and multi-scale media is studied. A spectral stochastic multi-scale finite-element method is developed to solve numerically the acoustic scattering problem based on the variation principle and the DtN mapping method. The results show that the proposed method is valid and its numerical implementation is very fast.

Key words:  acoustic scattering; multi-scale finite-element; spectral stochastic