全书分为六章。*章主要对第四代核能系统、钠冷快中子反应堆、快堆严重事故以及严重事故中出现的颗粒床现象进行总体概述,以使读者对本领域或本专题的研究背景有初步的认识;第二章和第三章则聚焦于熔融池内颗粒床相关现象,针对颗粒床对熔池流动性和晃动特性的影响分别进行详细的分析。
Chapter1 Introduction 1
1.1 Generation-Ⅳ NuclearReactorSystems 1
1.2 Sodium-CooledFastReactors 4
1.2.1 Developmenthistoryandcur entsituation ofSFRs 4
1.2.2 SystemcharacteristicsofSFRs 7
1.3 SFRSafetyAnalysisandSevereAc idents 11
1.4 Particle-Bed-RelatedPhenomenaDuringSFRSevere Acident 14
1.4.1 Molten-poolmobility 14
1.4.2 Molten-poolsloshingmotion 15
1.4.3 Debris-bedformationbehavior 15
1.4.4 Debris-bedself-levelingbehavior 17
1.5 Summar 18
References 19
Chapter2 Molten-PolMobility 22
2.1 Introduction 22
2.2 TheoreticalModelsandMethodsforMolten-Pool Mobilit 23
2.2.1 Multiphaseflow model 23
2.2.2 Particleviscositymodel 25
2.2.3 Particlejammingmodel 26
2.3 Molten-PoolMobilityinaLiquid-Dominant Particle-RichPool 28
2.3.1 Experimentalconditionsinaliquid-dominant particle-richpool 28
2.3.2 Simulationconditionfortheliquid-dominant particle-richpoolexperiments 30
2.3.3 Analysesoftheliquid-dominantparticle-rich poolexperimentsandsimulations 31
2.4 Molten-PoolMobilityinaParticle-DominantBubble-VisualizationPool 44
2.4.1 Experimentalconditioninaparticle-dominant bubble-visualizationpool 45
2.4.2 Simulationconditionfortheparticle-dominant bubble-visualizationpoolexperiments 46
2.4.3 Analysesoftheparticle-dominantbubble-visualization poolexperimentsandsimulations 47
2.5 Summary 57 References 58
Chapter3 Molten-PolSloshingMotion 60
3.1 Introduction 60
3.2 SloshingMotioninaPureLiquidPool 65
3.2.1 Symmetricdam-breakconditions 65
3.2.2 Asymmetricdam-breakcondition 85
3.2.3 Fluid-stepcondition 91
3.2.4 Centralizedmolten-fuel-fragmentfaling condition 94
3.2.5 Gas-injectionconditionwithhydraulic disturbances 100
3.2.6 Gas-injectionconditionwithouthydraulic disturbances 105
3.2.7 Gas-injectionconditionwithstratifiedliquids 112
3.3 SloshingMotioninaLiquidPoolwithSolidPhase 122
3.3.1 Dam-breakandfluid-stepconditionwithring obstacles 123
3.3.2 Dam-breakandfluid-stepconditionwithrod obstacles 127
3.3.3 Dam-breakconditionwithsolidparticles 132
3.3.4 Gas-injectionconditionwithsolidparticles 138
3.4 Summary 152 References 154
Chapter4 DebrisBedFormationBehavior 158
4.1 Introduction 158
4.2 InvestigationsonDebrisBedFormationBehavior inJapan 164
4.2.1 Single-sizesingle-shapesolidparticlecondition 164
4.2.2 Mixedsolidparticlecondition 198
4.3 InvestigationsonDebrisBedFormationBehavior inChina 216
4.3.1 Single-sizesphericalsolidparticlecondition 216
4.3.2 Single-sizenon-sphericalsolidparticlecondition 230
4.3.3 Mixed-sizesphericalsolidparticlecondition 233
4.3.4 Gas-injectioncondition 240
4.3.5 Botom-heatedcondition 247
4.4 Summary 257 References 259
Chapter5 DebrisBedSelf-LevelingBehavior 264
5.1 Introduction 264
5.2 ExperimentalStudiesonDebrisBedSelf-Leveling Behavior 269
5.2.1 Microscopicflow-regimeexperiments 269
5.2.2 Self-levelingexperimentsunderdepresurization andbotom-heatedboilingcondition 281
5.2.3 Self-levelingexperimentsundergas-injection condition 291
5.3 ModelingStudiesonDebrisBedSelf-LevelingBehavior 308
5.3.1 Modelingforself-levelingonsetcriteria 308
5.3.2 Modelingforthevariationofinclinationangle 312
5.3.3 Modelingforthevariationofmoundand bedheights 320
5.4 NumericalStudiesonDebrisBedSelf-LevelingBehavior 331
5.4.1 SIMMERsimulationwithdebris-fluidization andboiling-regulationmodels 332
5.4.2 SIMMERsimulationwithDEM model 337
5.4.3 SIMMERsimulationwithmodelsofinter-particle colisionsandcontacts 347
5.5 Summary 363 References 366
Chapter6 ConclusionandFutureProspect 370
6.1 ConclusionforPreviousInvestigations 371
6.2 FutureProspect 376