Apparatus to determine the complex mass of a viscous fluid contained in a rigid porous solid from acoustic pressure measurements
Publisher: Naval Postgraduate School; Available from the National Technical Information Service
Published: 1989
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Number of pages: 45
Description: Two experimental techniques to determine the frequency-dependent complex mass of a viscous fluid contained in a rigid porous solid are investigated. In one technique the moving mass of the fluid is by its effect on the measured input electrical impedance of a moving coil transducer. In the second technique the moving mass is extracted from the measured acoustic pressure required for the fluid to oscillate with a known amplitude through the solid frame. A description of the apparatus and preliminary results using the pressure method as well as a comparison of the two techniques are presented. Keywords: Acoustic impedance; Acoustic coupler; Complex mass density; Fluid saturated; Porous media; Theses. (jhd)
Notes: Thesis advisors, Steven R. Baker and O.B. Wilson.

ADA223709.

Thesis (M.S. in Eng. Acoustics) Naval Postgraduate School, Dec. 1989.

Bibliography: p. 43-44.

Record updated by PA. 10/21/04