Flow behaviour and local concentration of coarse particles-water mixture in inclined pipes
| Autor: | Jiri Konfrst, Zdenek Chara, Pavel Vlasak |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Fluid Flow and Transfer Processes
Materials science Mechanical Engineering 0208 environmental biotechnology education Environmental engineering 02 engineering and technology Mechanics Hydraulic engineering coarse particle mixture gamma-ray radiometry mixture flow behaviour hydraulic conveying 01 natural sciences 010305 fluids & plasmas 020801 environmental engineering Flow (mathematics) 0103 physical sciences concentration distribution TC1-978 effect of pipe inclination Water Science and Technology |
| Zdroj: | Journal of Hydrology and Hydromechanics, Vol 65, Iss 2, Pp 183-191 (2017) |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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