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Title:Diffusion of ultrasound in glass bead slurry
Author(s):Weaver, Richard L.; Sachse, Wolfgang
Subject(s):Diffusion Of Ultrasound
Glass Bead Slurry
Abstract:The ultrasonic energy density in a close packed disordered assemblage of glass beads immersed in water is shown to evolve in accordance with a diffusion equation. The diffusion and dissipation rates which parameterize the evolution equation are shown to be recoverable from the observed energy densities. The recovered diffusivity exhibits a frequency dependence which characterizes the microscale length and is in qualitative accord with theory. The recovered dissipation rate is found to be greater than predicted by a model of viscous shear loss at solid/fluid interfaces. An estimate for the proximity of the Anderson transition is constructed.
Issue Date:1993-12
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 742
Genre:Technical Report
Sponsor:National Science Foundation 93/12
Rights Information:Copyright 1993 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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