Measured dependence of the attenuation of audio-frequency sound on concentration in flowing particulate suspensions-Reference-Cited by-同舟云学术

Measured dependence of the attenuation of audio-frequency sound on concentration in flowing particulate suspensions

Published:1999-02-01 Issue:1 Volume:213 Page:45-56
ISSN:0954-4089
Container-title:Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering

Author:

Moss S H O¹,Attenborough K¹,Woodhead S R²

Affiliation:

1. Faculty of Technology Engineering Mechanics The Open University, Milton Keynes, UK

2. University of Greenwich School of Engineering Chatham Maritime, Kent, UK

Abstract

The relationship between the attenuation of sound at frequencies between 500 and 3500 Hz and the concentration of flowing suspensions of various powdered solids has been explored. The suspensions were conveyed in a pipeline of 53 mm diameter and the particle concentration was varied up to a maximum of 2.8 kg/kg. Three materials were tested: flour (mean radius, 27 μm), olivine sand (mean radius, 278 μm) and barytes. The feasibility of measuring the acoustic attenuation of particulate suspensions at audio-frequencies and relating the measured attenuation to concentration has been demonstrated. Although the audio-frequency attenuation is smaller at a given concentration than at ultrasonic frequencies, audio-frequency measurements are less susceptible to inhomogeneity of flow and to in-pipe turbulence than ultrasonic measurements.

Publisher

SAGE Publications

Subject

Industrial and Manufacturing Engineering,Mechanical Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1243/0954408991529988

Reference33 articles.

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2. On-line determination of pulverised coal mass flow using an ultrasonic technique

3. Multi-phase flow measurements in powder processing

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