Search results for "Multi Fluid Model"

showing 2 items of 2 documents

CFD simulations of dense solid–liquid suspensions in baffled stirred tanks: Prediction of solid particle distribution

2013

Abstract Industrial tanks devoted to the mixing of solid particles into liquids are often operated at an impeller speed N less than Njs (defined as the lowest speed allowing the suspension of all particles): under such conditions the distribution of solid-particles is very far from being homogeneous and very significant concentration gradients exist. The present work is devoted to assessing the capability of Computational Fluid Dynamics (CFD) in predicting the particle distribution throughout the tank. The CFD model proposed by Tamburini et al. [58] and successfully applied to the prediction of the sediment amount and shape was adopted here to simulate the particle distribution under partia…

EngineeringSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSteady statebusiness.industryGeneral Chemical EngineeringSettore ING-IND/25 - Impianti ChimiciMixing (process engineering)Mechanical engineeringGeneral ChemistryMechanicsComputational fluid dynamicsIndustrial and Manufacturing EngineeringRushton turbineImpellerSettore ING-IND/06 - FluidodinamicaEnvironmental ChemistryParticleMulti Fluid Model (MFM) Computational Fluid Dynamics (CFD) turbulence closure solid-liquid suspension partial suspension drag force stirred tank particle distribution Unsuspended Solid Criterion (USC)Suspension (vehicle)businessReynolds-averaged Navier–Stokes equations
researchProduct

CFD MODELLING OF PARTICLE SUSPENSION IN STIRRED TANKS

2011

Mixing of solid particles into liquids in mechanically agitated vessels is a topic of primary importance for several industrial applications. A great deal of research efforts has been devoted so far to the assessment of the minimum impeller speed (Njs) able to guarantee that all particles are suspended. Conversely, only little attention has been paid to the evaluation of the amount of solid particles that are suspended at impeller speeds N lower than Njs, despite the fact that in a number of industrial applications agitation speeds smaller than Njs are actually adopted [1,2]. The present work deals with dense solid-liquid partial suspensions in baffled stirred tanks and particularly focuses…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciStirred tankMulti Fluid ModelSettore ING-IND/25 - Impianti ChimiciMultiphase FlowSolid liquid suspensionComputational Fluid Dynamic
researchProduct