Flow behaviour and local concentration of coarse particles-water mixture in inclined pipes

Title:

Flow behaviour and local concentration of coarse particles-water mixture in inclined pipes

Creator:

Vlasák, Pavel, Chára, Zdeněk, and Konfršt, Jiří

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7710eb8f-fb81-4d4e-aca6-9e99b753a58c
uuid:7710eb8f-fb81-4d4e-aca6-9e99b753a58c
doi:10.1515/johh-2017-0001

Subject:

coarse particle mixture, concentration distribution, effect of pipe inclination, gamma-ray radiometry, hydraulic conveying;, and mixture flow behaviour

Type:

article, model:article, and TEXT

Description:

Narrow particle size distribution basalt pebbles of mean particle size 11.5 mm conveyed by water in the pipe sections of different inclination were investigated on an experimental pipe loop, consisting of smooth stainless steel pipes of inner diameter D = 100 mm. Mixture flow-behaviour and particles motion along the pipe invert were studied in a pipe viewing section, the concentration distribution in pipe cross-section was studied with the application of a gamma-ray densitometer. The study refers to the effect of mixture velocity, overall concentration, and angle of pipe inclination on chord-averaged concentration profiles and local concentration maps, and flow behaviour of the coarse particle-water mixtures. The study revealed that the coarse particle-water mixtures in the inclined pipe sections were significantly stratified, the solid particles moved principally close to the pipe invert, and for higher and moderate flow velocities particle saltation becomes the dominant mode of particle conveying.

Language:

Slovak

Rights:

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

Source:

Journal of hydrology and hydromechanics | 2017 Volume:65 | Number:2

Harvested from:

CDK

Metadata only:

false