Search results for " Solid Liquid Suspension"

showing 3 items of 3 documents

CFD prediction of solid particle distribution in baffled stirred vessels under partial to complete suspension conditions

2013

Solid-liquid mixing within tanks agitated by stirrers can be easily encountered in many industrial processes. It is common to find an industrial tank operating at an impeller speed N lower than the minimum agitation speed for the suspension of solid particles: under such conditions the distribution of solid-particles is very far from being homogeneous and very significant concentration gradients exist. The present work evaluates the capability of a Computational Fluid Dynamics (CFD) model to reliably predict the particle distribution throughout the tank under either partial or complete suspension conditions. A flat bottomed baffled tank stirred by a Rushton turbine was investigated. Both tr…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimicilcsh:Computer engineering. Computer hardwareSettore ING-IND/25 - Impianti Chimicilcsh:TP155-156lcsh:TK7885-7895lcsh:Chemical engineeringMixing Solid liquid suspensions CFDSettore ING-IND/19 - Impianti NucleariComputational Fluid Dynamics Baffled Stirred Vessel Solid Liquid Suspension
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ASSESSMENT OF THE MINIMUM POWER REQUIREMENTS FOR COMPLETE SUSPENSION IN TOP-COVERED UNBAFFLED STIRRED TANKS

2012

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSettore ING-IND/25 - Impianti ChimiciComplete suspension power number unbaffled stirred tanks solid liquid suspension mixing
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Influence of drag and turbulence modelling on CFD predictions of solid liquid suspensions in stirred vessels

2014

Abstract Suspensions of solid particles into liquids within industrial stirred tanks are frequently carried out at an impeller speed lower than the minimum required for complete suspension conditions. This choice allows power savings which usually overcome the drawback of a smaller particle-liquid interfacial area. Despite this attractive economical perspective, only limited attention has been paid so far to the modelling of the partial suspension regime. In the present work two different baffled tanks stirred by Rushton turbines were simulated by employing the Eulerian-Eulerian Multi Fluid Model (MFM) along with either the Sliding Grid algorithm (transient simulations) or the Multiple Refe…

Computational Fluid Dynamics (CFD)Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciEngineeringWork (thermodynamics)Steady statebusiness.industryTurbulenceSettore ING-IND/25 - Impianti ChimiciGeneral Chemical EngineeringMultiphase flowTurbulence modelGeneral ChemistryMechanicsComputational fluid dynamicsImpellerStirred tankDragControl theorySettore ING-IND/06 - FluidodinamicaSolid liquid suspensionMultiphase flowSuspension (vehicle)businessComputational Fluid Dynamics (CFD); Stirred tank; Solid liquid suspension; Drag force; Turbulence model; Multiphase flowDrag forceChemical Engineering Research and Design
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