Experimental investigation of fine-grained settling slurry flow behaviour in inclined pipe sections

Title:

Experimental investigation of fine-grained settling slurry flow behaviour in inclined pipe sections

Creator:

Vlasák , Pavel, Chára , Zdeněk, Matoušek , Václav, Konfršt , Jiří, and Keselý , Mikoláš

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6aea09ac-39d6-42b7-a072-7b1eb7e91373
uuid:6aea09ac-39d6-42b7-a072-7b1eb7e91373
doi:10.2478/johh-2018-0039

Subject:

settling slurry, effect of pipe inclination, concentration distribution, pressure drops, deposition limit, and gamma-ray radiometry

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

For the safe and economical design and operation of freight pipelines it is necessary to know slurry flow behaviour in inclined pipe sections, which often form significant part of pipelines transporting solids. Fine-grained settling slurry was investigated on an experimental pipe loop of inner diameter D = 100 mm with the horizontal and inclined pipe sections for pipe slopes ranging from –45° to +45°. The slurry consisted of water and glass beads with a narrow particle size distribution and mean diameter d50 = 180 μm. The effect of pipe inclination, mean transport volumetric concentration, and slurry velocity on flow behaviour, pressure drops, deposition limit velocity, and concentration distribution was studied. The study revealed a stratified flow pattern of the studied slurry in inclined pipe sections. Frictional pressure drops in the ascending pipe were higher than that in the descending pipe, the difference decreased with increasing velocity and inclination. For inclination less than about 25° the effect of pipe inclinations on deposition limit velocity and local concentration distribution was not significant. For descending pipe section with inclinations over –25° no bed deposit was observed.

Language:

Slovak

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

113-120

Source:

Journal of hydrology and hydromechanics | 2019 Volume:67 | Number:2

Harvested from:

CDK

Metadata only:

false