Open AccessAcoustic Monitor for Liquid-Solid Slurries Measurements at Low Weight Fractions
Author(s) -
L L Tavlarides,
A S Sangan
Publication year - 2004
Language(s) - English
Resource type - Reports
DOI - 10.2172/835741
Subject(s) - suspension (topology) , attenuation , acoustic attenuation , slurry , range (aeronautics) , materials science , particle (ecology) , acoustic wave , work (physics) , acoustics , physics , thermodynamics , composite material , optics , mathematics , geology , oceanography , homotopy , pure mathematics
The principle objective of the project was to develop an acoustic probe for determining the weight fraction of particles in a flowing suspension. The suspension can be solid-liquid (S-L) or solid-gas-liquid (S-G-L). The work accomplished during the first three years of DOE funding was devoted to the development of a rigorous theory for acoustic wave propagation through solid-liquid (S-L) and solid-gas-liquid (S-G-L). In the first funding period we developed an acoustic probe for S-G-L suspensions that has resulted in a theory, supported by our experiments, to describe small amplitude acoustic wave propagations in dilute suspensions (Norato, 1999; Spelter al., 1999, 2001: Norato et al. 2002). The theory agrees well with experimental data of sound attenuation over a wide range of particle sizes, frequencies, and weight percent solids. We have also completed theoretical and experimental investigation on the effect of entrained gas bubbles on the attenuation. This analysis permits us to determine the S-L weight percent in the presence of bubbles