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Water 2017, 9(7), 474; https://doi.org/10.3390/w9070474

Dependence of Sediment Suspension Viscosity on Solid Concentration: A Simple General Equation

College of Water Sciences, Beijing Normal University, Beijing 100875, China
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Received: 27 May 2017 / Revised: 24 June 2017 / Accepted: 26 June 2017 / Published: 28 June 2017
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Abstract

In this study, a simple and new parametric equation is proposed that describes the relative viscosity of a suspension as a function of suspended solid concentration, covering a range from very dilute to highly concentrated states, based on Costa (2005). The proposed viscosity law depends mainly on the solid volumetric concentration and maximum packing fraction at which a regime transition occurs. Furthermore, the viscosity of dilute as well as a highly-concentrated kaolinite suspension (in excess of 40% and lower than 50%) was measured in a coaxial cylinder rheometer. The proposed formula shows a capability of fitting the measured bulk viscosity into the hyper-concentrated regime in the experiment. Finally, the proposed equation could also be found to show a good fitting relationship with published experimental results on partially crystallised Li2Si2O5 melt and partially melted granite with solid contents from 75% to 95%. View Full-Text
Keywords: viscosity; solid concentration; kaolinite; general equation viscosity; solid concentration; kaolinite; general equation
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zhu, Z.; Wang, H.; Peng, D. Dependence of Sediment Suspension Viscosity on Solid Concentration: A Simple General Equation. Water 2017, 9, 474.

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