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Simulation of concentrated suspensions in free surface systems
Author(s) -
Javidi Mahyar,
Hrymak Andrew N.
Publication year - 2016
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.22620
Subject(s) - volume of fluid method , volume fraction , mechanics , materials science , finite volume method , particle (ecology) , cylinder , free surface , coating , volume (thermodynamics) , work (physics) , two phase flow , diffusion , computer simulation , suspension (topology) , range (aeronautics) , boundary layer , flow (mathematics) , composite material , thermodynamics , physics , mechanical engineering , engineering , mathematics , geology , oceanography , homotopy , pure mathematics
This study deals with the numerical simulation of free‐surface concentrated suspensions using the finite volume method. The numerical procedure, based on the particle diffusion‐flux model, is implemented in a computational fluid dynamic platform for estimating the particle volume fraction in three‐dimensional flows with arbitrary geometry and boundary conditions. The Volume of Fluid (VOF) method has been applied to track the flow interface between liquid and gas, with the solid particles dispersed in the liquid phase, in the free coating process. A finite length cylinder is dip coated, where the substrate is pulled out of a concentrated suspension bath. In the current work, the initial solid particle volume fraction range is 0.1–0.4 and the withdrawal velocity varies in the range of 0.05–0.15 m/s. Comparisons are made between numerical simulation predictions and experimental results for coating layer thickness, with close agreement achieved.