Laser halo measurements of solid–liquid two phase flows
Date Issued
2007
Date
2007
Author(s)
Chi, Tai-An
DOI
en-US
Abstract
Flows of concentrated solid-liquid mixtures are studied experimentally using a moving belt flume and novel measurement techniques. The flume is used to produce steady uniform free-surface flows under controlled conditions. Measurements of particle concentration and motions inside the mixture are obtained by making the mixture transparent (using refractive index matching), and illuminating a cross section using a laser light sheet. As they cross the light sheet, the spherical particles produce bright halos, which can be interpreted to obtain concentration and velocity measurements. These measurements are analyzed to examine relationships between solid concentration, shear rate, and inter-layer stresses.
Subjects
土石流
固液二相流
雷射切頁
debris flow
solid-liquid two phase flows
laser slice
Type
thesis
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