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The Characterisation of Particles Using the Settling Rate dependent movement in two phase flows
Author(s) -
Leschonski Kurt
Publication year - 1993
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19930100403
Subject(s) - settling , sedimentation , mechanics , flow (mathematics) , volumetric flow rate , particle (ecology) , two phase flow , stagnation point , perpendicular , phase (matter) , materials science , thermodynamics , physics , geology , mathematics , sediment , geometry , geomorphology , heat transfer , oceanography , quantum mechanics
The drawback of conventional sedimentation methods, mainly their extremely long sedimentation time for small particles, can be overcome in two phase flow systems. In this paper several principles which permit the rapid determination of settling rate distributions are discussed. Settling rate distributions can be determined from the accelerated particle movement in a flow of constant velocity at low and high solids concentrations. Another system uses accelerated flow at low solids concentrations. The best utilisation of settling rate applications have socalled cross flow systems as set up in a stagnation point flow, in a flow round a bend, or in the decelerated particle movement perpendicular to a flow of constant velocity.