title: A model for sound propagation between two adsorbing microporous plates.
abstract: A model describing the sound propagation between two infinite adsorbing plates is proposed in order to investigate the extension to the audible sound range of the Frequency Response method applied to the measurement of diffusion in micropores. The model relates adsorption parameters (i.e., diffusivity and equilibrium constant) to an acoustic quantity (i.e., propagation constant). The equations describing sound propagation in the presence of adsorbing boundaries are obtained on the basis of the classical Kirchhoff theory [(1868). Ann. Phys. (Leipzig) 134, 177-193]. The solution is derived using the Low Reduced Frequency Approximation method [Tijdeman, (1975). J. Sound Vib. 39, 1-33].
authors.affiliation: School of Engineering, The University of Edinburgh, The King's Buildings, Edinburgh EH9 3JL, United Kingdom.
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Nori
authors.affiliation: School of Engineering, The University of Edinburgh, The King's Buildings, Edinburgh EH9 3JL, United Kingdom.
authors.forename: Stefano
authors.initials: S
authors.lastname: Brandani