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Acoustic and elastic waves in random media – CPA
Author(s) -
Kafesaki M.,
Economou E.N.
Publication year - 1998
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/(sici)1521-3889(199811)7:5/6<383::aid-andp383>3.0.co;2-y
Subject(s) - homogeneous , scattering , physics , mean free path , phase velocity , acoustic wave , phase (matter) , acoustics , elastic scattering , wave propagation , computational physics , optics , statistical physics , quantum mechanics
We study the propagation of acoustic and elastic waves in random composites consisting of spherical inclusions in a homogeneous elastic host (fluid or solid), using various extensions of the Coherent Potential Approximation (CPA) method, well‐known from the electronic problem. We calculate the phase velocity, the scattering mean free path and the transport velocity. The results are compared with experimental data and accurate computational results.