内容简介

Numericalapproacheshavebecomeindispensableinstudiesonparticlefluidflows.Inthisbook,variousnumericalmodelshavebeenappliedtostudytheparticlefluidflowsindifferentcomplexpipesystems,includingindustrialscalecirculatingfluidizedbeds(CFBs),longdistancehighpressuredensephase(LHD)pneumaticconveyingsystems,andnovelandcomplexbypasspneumaticconveyingsystems,whicharewidelyencounteredinmanyindustrysectorssuchasenergy,chemical,andmineral,toname
afew.Thenumericalresultsofthesimulationsarevalidatedeitherqualitativelyorquantitativelydependingontheavailabilityofexperimentaldataandsimulationresultsforcomparison.Thisbookcanbeusedasatrainingmaterialforhighlevelundergraduates,graduatestudentsandteachersinrelatedmajorstolearnnumericalapproaches,andcanalsobeusedasareferencebookforcomplexpipesystemsdesign,controlandoptimizationengineers.

前言概述

Thisbookpresentsanumericalstudyofgas-solidflowsintheriserofcirculatingfluidisedbeds(CFB),andpneumaticconveying.Threedifferentnumericalmethodswereused,includingthetwo-fluidmodel(TFM),coupledcomputationalfluiddynamicsanddiscreteelementmethods(CFD-DEM),andcoarsegrainCFD-DEM.Forthestudyonpneumaticconveying,densephasehorizontalpneumaticconveyingwasfirstanalysed,conveyingwithsteppedpipesandinsertswasalsoexplorednumerically.UsingcommercialCFDsoftwareand
inhouseCFD-DEMandcoarsegrainCFD-DEM,theauthorsperformedaseriesofsimulationsfortheabovementionedapplications,forwhichsystematicstudieswereperformedtoexploretheeffectsofprocessconditionsandsystemsetupsonhydrodynamicsofthegas,dynamicsandmicro-mechanicsofthesolidphaseinthesesystems.Thenumericalsimulationswerewellexecutedandclearlypresentedinthisbook.Inaddition,Iwouldliketotakethisopportunitytoexpressmysinceregratitudetomymaindoctoralsupervisor,
Prof.AibingYuandmyassociatesupervisor,DrKaiweiChu,forguidingandsupportingmeovertheyears.IamalsoverygratefultoAssociateProf.RuipingZouforhervaluableadviceandsuggestions,agreatdealofhelpinmystudiesandlife.Moreover,itisahopelessunderstatementtosaythatIsincerelyappreciateallthehelpfromthecolleaguesintheSIMPAS,thestaffintheSchoolofMaterialsScienceandEngineeringatUNSWandintheDepartmentofChemicalEngineeringatMonashUniversity,the
loveandencouragementfrommyfamily,thefinancialsupportfromJiangxiUniversityofScienceandTechnology，ARC，andFujiangLongkingCo.,Ltd.Thisbookwouldnotbepossiblewithouttheirwiseguidanceandextraordinaryinspiration.Duetolimitedprofessionalknowledgeandthepreparationoftime,theremaybesomeshortcomingsinthebook,sincerelyhopethatreaderscancorrect

作者介绍

李政权，中共党员，博士，江西理工大学硕士生导师，2016年11月获澳大利亚蒙纳士大学博士学位，师从澳大利亚科学院和工程院两院院士、中国工程院外籍院士余艾冰教授。主要研究领域为多相流计算机仿真模拟研究，化工环保机械、冶金设备的数字化设计研究。在“MathematicalProblemsinEngineering”、“SensorLetters”等国际期刊已发表学术论文8篇，其中SCIEI检索5篇；以第一申请人申请国家发明专利5项、软件著作权4项；主持江西省省部级项目1项、创新创业项目2项、江西理工大学校级课题3项，累计参与澳大利亚科学基金委项目2项，中国“863”科技项目1项，中国国家自然科学基金3项；获2018年度中国有色金属工业科学技术二等奖1项；2019年入选江西理工大学清江青年优秀人才支持计划。此外，作为Particulate
ScienceandTechnology等国际知名期刊的同行评议审稿人一直参与期刊论文评审。科研获奖：(1)废润滑油催化裂解绿色智能制备轻柴油示范工程，中国有色金属工业科学技术奖二等奖，2018年12月科研项目：(1)江西省教育厅科学技术研究项目(编号：GJJ180426)，基于CFD-DEM的固液搅拌槽内流体力学性能的数值模拟研究，20191-202112，3万人民币，在研，主持。(2)江西理工大学博士人才引进基金项目(编号：3401223337)，数值模拟技术在工业规模循环流化床中的应用研究，20181-202012，10万人民币，在研，主持。
(3)澳大利亚AustralianResearchCouncil(ARC)项目(编号：IH140100035)，ARCResearchHubforComputationalParticleTechnology，20151-201912，5000万元，在研，参与(4)澳大利亚AustralianResearchCouncil(ARC)项目(编号：LP130100365)，Fundamentalstudiesofmultiphaseflowandseparationperformanceofnaturalmediumcyclonesforrecoveringwastecoal,20131-201612，225万元，已结题，参与软件著作权：(1)变径管气力输送系统仿真模拟平台V1.0，2020SR0916482，2020年8月(排名第一)(2)工业规模循环流化床仿真模拟平台V1.0，2020SR0916771，2020年8月(排名第一)(3)双套管气力输送系统仿真模拟平台V1.0，2020SR0923097，2020年8月(排名第一)(4)反应釜搅拌过程仿真模拟平台V1.0，2020SR0922760，2020年8月(排名第一)

目录

Chapter1 Background

Chapter2 LiteratureSurvey

2.1Introduction

2.2Complexpipesystems

2.2.1Industrialscalecirculatingfluidizedbed(CFB)

2.2.2Longdistancehighpressuredensephase(LHD)pneumaticconveyingsystem

2.2.3Bypasspneumaticconveyingsystem

2.3Numericalmethods

2.3.1Twofluidmodel(TFM)

2.3.2Discreteelementmethod(DEM)

2.3.3CouplingofDEMandCFD

2.3.4Coarsegrained(CG)parcelCFDDEMapproach

2.4Summaryandproposedresearch

Chapter3 SimulationofIndustrialScaleCFBUsingCoarseGrainedCFDDEMModel

3.1Introduction

3.2Experimentsandsimulationconditions

3.2.1Backgrounds

3.2.2Experimentalsetupandmeasurements

3.2.3Mathematicalmodel

3.2.4Simulationconditions

3.3Resultsanddiscussion

3.3.1Axialpressuregradient

3.3.2Solidvelocityandconcentration

3.3.3Particleclusterandsolidsbackmixing

3.3.4Analysisoftheinteractionforces

3.3.5Effectsofdifferentmodelparticlesizes

3.3.6Effectsofdifferentsolidmassflowrate

3.4Conclusions

Chapter4 ComputationalStudyofGassolidFlowinLHDPneumaticConveyingSystems

4.1Introduction

4.2Mathematicalmodel

4.2.1TFM

4.2.2CFDDEM

4.3Simulationconditions

4.4Modelvalidation

4.5Resultsanddiscussion

4.5.1Pressuredrop

4.5.2Gasvelocity

4.5.3Solidvelocity

4.5.4Forcesgoverningthemotionofsolids

4.6Conclusions

Chapter5 NumericalStudyofGassolidFlowinSteppedPipewithInserts

5.1Introduction

5.2Mathematicalmodel

5.2.1TFM

5.2.2CFDDEM

5.3Simulationcondition 

5.4Resultsanddiscussion

5.4.1Singlepipewithinserts

5.4.2Steppedpipewithinserts

5.4.3Differentshapeofinserts

5.5Conclusions