In: Journal of Hydrology and Hydromechanics, vol. 68, no. 3
Mikolas Kesely
Detaily:
Rok, strany: 2020, 223 - 230
Jazyk: eng
Kľúčové slová:
Non-Newtonian; Suspension; Turbulence; Complex slurries; Tailings; Heterogeneous.
URL originálneho zdroja: http://www.ih.sav.sk/jhh
O článku:
The paper describes a mathematical and physical modelling of flow of complex slurries in pipelines, i.e. a
flow of slurries composed of solids covering a very broad range of particle sizes that overlaps more than one flow
patterns – non-Newtonian, pseudohomogeneous, heterogeneous and fully-stratified. A typical examples are residual
products (“tailings”) from mining industry with normal average particle sizes of 20 to 100 μm or more. Experimental
results of flows of complex slurries composing of non-Newtonian carrier fluid and three fractions of glass particles in 50
mm pipe are presented. Depending on the particle size, particles show different flow patterns and therefore considerable
differences in pressure drops. Fine particles tend behave as a homogeneous matter, while coarser particles exhibit
heterogeneous behaviour and even coarser particles form a sliding bed. A mathematical 3-component predictive model
for turbulent flow of complex slurries is presented based on well-established semi-empirical formulae developed
originally for flows with Newtonian carrier. The predicted values of pressure drops show very reasonable agreement with
experimental results and indicate suitability of the model for engineering practice.
Ako citovať:
ISO 690:
Kesely, M. 2020. A modification of predictive three-component model for turbulent flows of
complex slurries in pipelines based on experimental results. In Journal of Hydrology and Hydromechanics, vol. 68, no.3, pp. 223-230. 0042-790X (until 2019) . DOI: https://doi.org/10.2478/johh-2020-0019
APA:
Kesely, M. (2020). A modification of predictive three-component model for turbulent flows of
complex slurries in pipelines based on experimental results. Journal of Hydrology and Hydromechanics, 68(3), 223-230. 0042-790X (until 2019) . DOI: https://doi.org/10.2478/johh-2020-0019
O vydaní:
Vydavateľ: VEDA, Publishing House of the Slovak Academy of Sciences, Bratislava, Slovakia
Publikované: 15. 9. 2020