Volume averaging theory (VAT) is used to develop acoustic governing equations and consistent closure for one dimensional wave propagation in a heterogeneous porous media. These equations are based on continuum mechanics and scaled to delineate the parameters governing wave propagation in the media. The parameters can be evaluated for different media and be the basis for calculation of the performance of a given porous media. Comparison with experimental data are made and the comparison is very good. More general closure parameters will require experimental measurement to give appropriate models of non-homogeneous, media.

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