Evolution of the Composition and Changes in the Nature of Oscillations of a Coagulating Gas Suspension in the Wave Field of an Acoustic Resonator

The article analyzes how the fractional composition of a gas suspension filling an acoustic resonator, which changes during coagulation, influences the characteristics of oscillations of the carrier medium and dispersed fractions at a fixed external excitation frequency. Longitudinal oscillations in...

Full description

Saved in:
Bibliographic Details
Published in:High temperature 2022-12, Vol.60 (6), p.804-811
Main Authors: Tukmakov, A. L., Akhunov, A. A.
Format: Article
Language:English
Subjects:
Amplitudes
Atoms and Molecules in Strong Fields
Carrier mobility
Classical and Continuum Physics
Coagulation
Composition
Heat and Mass Transfer and Physical Gasdynamics
Industrial Chemistry/Chemical Engineering
Laser Matter Interaction
Materials Science
Nodes (standing waves)
Oscillations
Physical Chemistry
Physics
Physics and Astronomy
Resonant frequencies
Resonators
Standing waves
Velocity distribution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The article analyzes how the fractional composition of a gas suspension filling an acoustic resonator, which changes during coagulation, influences the characteristics of oscillations of the carrier medium and dispersed fractions at a fixed external excitation frequency. Longitudinal oscillations in the resonator are created by a piston moving according to a harmonic law with a constant frequency and amplitude. The change in the dispersity of the fractions, which occurs as a result of coagulation, changes the resonance frequency of the system and the nature of oscillations at a fixed piston oscillation frequency. The dynamics of the medium is described by a system of equations for the motion of a polydisperse gas suspension, which includes the carrier medium and several particle size fractions. The particle coagulation process is described using the Smoluchowski model, which takes into account the mass, momentum, and energy exchange between fractions during coalescence. It is shown that discontinuous oscillations form in the resonator oscillations of the gas suspension at the first eigenfrequency for longitudinal oscillations of the carrier medium. The subsequent movement of the dispersed phase to the nodes of the standing wave of the velocity field reduces the amplitude and changes the type of oscillations.
ISSN:0018-151X
1608-3156
DOI:10.1134/S0018151X22050133