Validation of CFD-DEM simulation of a liquid-solid fluidized bed by dynamic analysis of time series  

作　　者：Julia Picabea Mauricio Maestri Miryan Cassanello Gabriel Salierno Cataldo De Blasio María Angélica Cardona Daniel Hojman Héctor Somacal 

机构地区：[1]Departamento de Industrias,Facultad de Ciencias Exactas y Naturales,Universidad de Buenos Aires,Ciudad Universitaria,Intendente Güiraldes 2160,C1428EGA,Buenos Aires,Argentina [2]CONICET-Universidad de Buenos Aires,Instituto de Tecnología de Alimentos y Procesos Químicos-ITAPROQ,Ciudad Universitaria,Intendente Güiraldes 2160 C1428EGA,Buenos Aires,Argentina [3]Faculty of Science and Engineering,Abo Akademi University,Rantakatu 2,65100 Vaasa,Finland [4]Laboratorio de Diagnósticos por Radiaciones,Dep.Física Experimental,Comisión Nacional de Energía Atómica,BKNA1650 San Martín,Buenos Aires,Argentina [5]CONICET,C1033AAJ Buenos Aires,Argentina [6]Escuela de Ciencia y Tecnología,Universidad de San Martín,BKNA 1650 San Martín,Buenos Aires,Argentina

出　　处：《Particuology》2022年第9期75-87,共13页颗粒学报（英文版）

基　　金：Financial support from Hogskolestiftelsen iÖster-botten(2804720/28600122);the Harry Schaumans Foundation(2804720/28002257);Suomen Kulttuurirahasto(00210970);CON-ICET(PIP1122015-0100902CO);Universidad de Buenos Aires(UBACyT 20020130100544BA)is gratefully acknowledged.

摘　　要：Liquid-solid fluidized beds(LSFB)modeling validation is crucial for establishing design rules and monitor-ing tools.However,it generally relies on comparing global variables,which overlook dynamic features that influence reaction outputs.This work aims to implement time series analysis tools to compare Radioactive Particle Tracking data with a simulation consisting of Computational Fluid Dynamics cou-pled with Discrete-Element Method.Experiments have been performed in a pilot-scale LSFB of calcium alginate spheres fluidized with a calcium chloride solution.The Diks'test indicates that the simulation can capture the LSFB behavior.It also allows diagnosing flow regime transitions from the simulation.Trends of solid dispersion coefficients and mixing times predicted by the simulation are in good agreement with the experiments.

关 键 词：Liquid-solid fluidization CFD-DEM Dynamic comparison Radioactive particle tracking 

分 类 号：O35[理学—流体力学]