Experimental investigation of coarse particles-water mixture flow in horizontal and inclined pipes

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Title:Experimental investigation of coarse particles-water mixture flow in horizontal and inclined pipes
Creators:
Vlasák, Pavel; vlasak at ih dot cas dot cz; Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic, v. v. i., Pod Paťankou 30/5, 166 12 Prague 6, Czech Republic
Chára, Zdeněk; Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic, v. v. i., Pod Paťankou 30/5, 166 12 Prague 6, Czech Republic.
Krupička, Jan; Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic, v. v. i., Pod Paťankou 30/5, 166 12 Prague 6, Czech Republic.
Konfršt, Jiří; Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic, v. v. i., Pod Paťankou 30/5, 166 12 Prague 6, Czech Republic.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 62, 3, pp. 241-247
Uncontrolled Keywords:hydraulic pipelining, coarse-grained slurry, pressure drops, pipe inclination, concentration distribution

Abstract

The effect of solid concentration and mixture velocity on the flow behaviour, pressure drops, and concentration distribution of coarse particle–water mixtures in horizontal, vertical, and inclined smooth stainless steel pipes of inner diameter D = 100 mm was experimentally investigated. Graded basalt pebbles were used as solid particles. The study revealed that the coarse-grained particle-water mixtures in the horizontal and inclined pipes were significantly stratified. The solid particles moved principally in a layer close to the pipe invert; however for higher and moderate flow velocities, particle saltation became the dominant mode of particle conveyance. Frictional pressure drops in the horizontal pipe were found to be markedly higher than in the vertical pipe, while the frictional pressure drops in the ascending pipe increased with inclination angle up to about 30°.

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Title:Experimental investigation of coarse particles-water mixture flow in horizontal and inclined pipes
Translated title:Experimental investigation of coarse particles-water mixture flow in horizontal and inclined pipes
Creators:
Vlasák, Pavel; vlasak at ih dot cas dot cz; Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic, v. v. i., Pod Paťankou 30/5, 166 12 Prague 6, Czech Republic
Chára, Zdeněk; Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic, v. v. i., Pod Paťankou 30/5, 166 12 Prague 6, Czech Republic.
Krupička, Jan; Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic, v. v. i., Pod Paťankou 30/5, 166 12 Prague 6, Czech Republic.
Konfršt, Jiří; Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic, v. v. i., Pod Paťankou 30/5, 166 12 Prague 6, Czech Republic.
Uncontrolled Keywords:hydraulic pipelining, coarse-grained slurry, pressure drops, pipe inclination, concentration distribution
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:62
Number:3
Page Range:pp. 241-247
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8289
Item Type:Article
Deposited On:01 Oct 2014 13:27
Last Modified:01 Oct 2014 11:27

Citation

Vlasák, Pavel; Chára, Zdeněk; Krupička, Jan; Konfršt, Jiří (2014) Experimental investigation of coarse particles-water mixture flow in horizontal and inclined pipes. Journal of Hydrology and Hydromechanics, 62 (3). pp. 241-247. ISSN 0042-790X

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