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[9485] Artykuł: Prediction of vertical liquid-solid pipe-flow using measured concentration distributionCzasopismo: Particulate Science and Technology Tom: 13, Zeszyt: 2, Strony: 85-104ISSN: 0272-6351 Wydawca: TAYLOR & FRANCIS INC, 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA Opublikowano: 1995 Liczba arkuszy wydawniczych: 1.00 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 0 Klasyfikacja Web of Science: Article DOI Web of Science |
The performance of a standard (k-L) turbulence model for predicting slurry pipeline pressure gradients is examined using experimental measurements of velocity and solids concentration distribution for upward vertical flows. Assuming the solids concentration rises abruptly from a value of zero at the pipe wall over a distance corresponding to one half a particle diameter, satisfactory predictions were obtained for sand particles of median diameter up to about 800 mu m in a 25.8 mm vertical pipeline. No damping of fluid turbulence or additional stresses due to particle-particle interactions were included in the computational model.
Velocity distributions are found to be natter than those of turbulent single-phase flows, because of the variation of mixture properties in the vicinity of the pipe wall.