Numerical simulation on flow of ice slurry in horizontal straight tube

Abstract

Numerical simulation on flow of ice slurry in horizontal straight tubes was conducted in this paper to improve its transportation characteristics and application. This paper determined the influence of the diameter and length of tubes, the ice packing factors (IPF) and the flow velocity of ice slurry on pressure loss by using numerical simulation, based on two-phase flow and the granular dynamic theory. Furthermore, it was found that the deviation between the simulation results and experimental data could be reduced from 20% to 5% by adjusting the viscosity which was reflected by velocity. This confirmed the reliability of the simulation model. Thus, two mathematical correlations between viscosity and flow velocity were developed eventually. It could also be concluded that future rheological model of ice slurry should be considered in three sections clarified by the flow velocity, which determined the fundamental difference from single-phase fluid.

Key words： ice slurry; horizontal tubes; numerical simulation; pressure drop; viscosity model

Acknowledgments

The work in this paper is supported by the ‘Tianjin Research Program of Application Foundation and Advanced Technology’ (15JCYBJC21600) and the science research innovation team project in Tianjin, China ‘Energy saving of equipment in food cold chain and new technologies in refrigerated transportation’ (TD12-5048) .

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