<abstract xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></abstract>

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.

A modification of predictive three-component model for turbulent flows of complex slurries in pipelines based on experimental results

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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...

A modification of predictive three-component model for turbulent flows of complex slurries in pipelines based on experimental results

Published Online: Aug 10, 2020

Page range: 223 - 230

Received: Feb 04, 2020

Accepted: Apr 30, 2020

DOI: https://doi.org/10.2478/johh-2020-0019

Keywords
Non-Newtonian, Suspension, Turbulence, Complex slurries, Tailings, Heterogeneous

© 2020 Mikolas Kesely, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A modification of predictive three-component model for turbulent flows of complex slurries in pipelines based on experimental results

Published Online: Aug 10, 2020

Page range: 223 - 230

Received: Feb 04, 2020

Accepted: Apr 30, 2020

DOI: https://doi.org/10.2478/johh-2020-0019

KeywordsNon-Newtonian, Suspension, Turbulence, Complex slurries, Tailings, Heterogeneous

© 2020 Mikolas Kesely, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Non-Newtonian, Suspension, Turbulence, Complex slurries, Tailings, Heterogeneous