Coarse-grained particles conveying along a pipe bed

0398482 - ÚH 2014 RIV CZ eng A - Abstract
Vlasák, Pavel - Chára, Zdeněk - Konfršt, Jiří - Kysela, Bohuš
Coarse-grained particles conveying along a pipe bed.
ENGINEERING MECHANICS 2013. Praha: Insitute of Thermomechanics ASCR, v. v. i., 2013 - (Zolotarev, I.). s. 181-182. ISBN 978-80-87012-46-8. ISSN 1805-8248.
[ENGINEERING MECHANICS 2013 /19./. 13.05.2013-16.05.2013, Svratka]
R&D Projects: GA ČR GAP105/10/1574
Institutional support: RVO:67985874
Keywords : coarse-grained slurry * flow structure * visualisation * liquid local velocity * particle velocity
Subject RIV: BK - Fluid Dynamics

The paper describes the results of a flow visualisation of model coarse-grained fully stratified particle-water mixtures. Investigation was focussed on study of the particle behaviour and carrier liquid and conveyed particles local velocities. Glass balls and washed graded pebble gravel of mean diameter of 6 mm were conveyed by water in a horizontal smooth pipe loop with a transparent pipe viewing section of inner diameter 40 mm. Particle movement along the pipe invert and particulate stationary bed, created by two layers of spherical particles of the same size as the conveyed particles, was studied. The effect of stationary bed on local velocity values of the carrier liquid and conveyed particles were determined. It was conducted that the maximum liquid velocity is significantly shifted from pipe centre to a higher position in the flow pattern with stationary bed.
Permanent Link: http://hdl.handle.net/11104/0225988