DETERMINATION OF PHYSICAL PROPERTIES OF ISOTROPIC POROUS MATERIALS BY IMPEDANCE TUBE

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Author list: Sharma S, Siginer D

Publisher: AMER SOC MECHANICAL ENGINEERS

Place: NEW YORK

Publication year: 2009

Start page: 1235

End page: 1237

Number of pages: 3

ISBN: 978-0-7918-4372-7

Languages: English-Great Britain (EN-GB)

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Abstract

Simulation of fluid flow in porous materials depends upon the accuracy of permeability measurement. This study details the development of an acoustical method to determine permeability of porous medium. Standardized acoustical testing for low frequency using impedance tube is carried out to determine the acoustical properties of the fibers. Physical properties of porous medium are determined by reverse calculation from the acoustical properties. The acoustical method is validated by comparing the measured acoustical properties of the porous medium by the analytical method. A variety of foams and fibers are tested using this methodology.

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