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

0429704 - ÚH 2015 RIV SK eng J - Článek v odborném periodiku
Vlasák, Pavel - Chára, Zdeněk - Krupička, Jan - Konfršt, Jiří
Experimental investigation of coarse particles-water mixture flow in horizontal and inclined pipes.
Journal of Hydrology and Hydromechanics. Roč. 62, č. 3 (2014), s. 241-247. ISSN 0042-790X. E-ISSN 1338-4333
Grant CEP: GA ČR GAP105/10/1574
Institucionální podpora: RVO:67985874
Klíčová slova: hydraulic pipelining * coarse-grained slurry * pressure drops * pipe inclination * concentration distribution
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 1.486, rok: 2014

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°.
Trvalý link: http://hdl.handle.net/11104/0234765