| 扩展中文摘要 | 第4-19页 |
| Abstract | 第19-21页 |
| Nomenclature | 第25-27页 |
| Chapter 1 Introduction | 第27-42页 |
| 1.1 Background and significance of this research | 第27-29页 |
| 1.2 Literature review | 第29-40页 |
| 1.2.1 Fluidization | 第29-30页 |
| 1.2.2 Geldart classification of solids | 第30-32页 |
| 1.2.3 Internally circulating fluidized bed | 第32-33页 |
| 1.2.4 Experimental research on the internally circulating fluidized bed | 第33-38页 |
| 1.2.5 State of the art: Numerical studies regarding ICFBs | 第38-40页 |
| 1.3 Objectives and organization of the thesis | 第40-42页 |
| Chapter 2 Description of mathematical model | 第42-53页 |
| 2.1 Basic approaches to multiphase flow modeling | 第42-44页 |
| 2.1.1 Eulerian-Lagrange model | 第43页 |
| 2.1.2 Eulerian-Eulerian model | 第43-44页 |
| 2.1.3 Application of numerical approaches for multiphase flow | 第44页 |
| 2.2 Numerical model description | 第44-50页 |
| 2.3 Model setup in Fluent | 第50-52页 |
| 2.4 Brief Summary | 第52-53页 |
| Chapter 3 Numerical simulation of gas-solid flow in internally circulatingfluidized bed | 第53-64页 |
| 3.1 Simulation strategy and boundary conditions | 第53-54页 |
| 3.2 Boundary conditions and solution method | 第54-55页 |
| 3.3 Simulation results and discussion | 第55-63页 |
| 3.3.1 Grid independence | 第55页 |
| 3.3.2 Gas-solid flow dynamics | 第55-57页 |
| 3.3.3 Variation of gas pressure, solid circulation rate, gas bypassing flux andgranular temperature with time | 第57-58页 |
| 3.3.4 Effect of bed material as a function of gas velocity UR | 第58-62页 |
| 3.3.5 Solids discharge coefficient through the slot | 第62-63页 |
| 3.4 Brief summary | 第63-64页 |
| Chapter 4 Numerical simulation of the effect of gas distributor configuration inan ICFB | 第64-89页 |
| 4.1 Effect of gas distributor designs | 第64-65页 |
| 4.2 Geometry and simulation conditions | 第65-66页 |
| 4.3 Boundary conditions and solution procedure | 第66-67页 |
| 4.4 Simulation results and discussion | 第67-76页 |
| 4.4.1 Grid independence | 第67页 |
| 4.4.2 Gas-solid flow behavior | 第67-69页 |
| 4.4.3 Instantaneous gas pressure, solid circulation rate and granulartemperature through slot | 第69-71页 |
| 4.4.4 Effect of gas distributor design as a function of the gas velocity U_R | 第71-75页 |
| 4.4.5 Solids discharge coefficient through the slot | 第75-76页 |
| 4.5 Effect of ICFB configuration: Internally circulating elevated fluidizedbed | 第76-78页 |
| 4.5.1 Geometry description and simulation strategy | 第76-77页 |
| 4.5.2 Boundary conditions and solution procedure | 第77-78页 |
| 4.6 Simulation results and discussion | 第78-87页 |
| 4.6.1 Gas-solid flow dynamics | 第78-79页 |
| 4.6.2 Variation of gas pressure, gas and solids circulation rate and granulartemperature with time | 第79-81页 |
| 4.6.3 Effect of chamber elevation and interchanging | 第81-83页 |
| 4.6.4 Effect of the superficial gas velocities UR and UH | 第83-87页 |
| 4.7 Brief summary | 第87-89页 |
| Chapter 5 Numerical simulation of circulation characteristics of binarymixture of particles in an ICFB | 第89-111页 |
| 5.1 Constituent particles have different size but same density | 第89-91页 |
| 5.2 Simulations Results an discussion | 第91-96页 |
| 5.2.1 Effect of mixture composition | 第92-94页 |
| 5.2.2 Effect of gas velocity UR | 第94-96页 |
| 5.2.3 Effect of the slot size | 第96页 |
| 5.3 Constituent particles have different size and density | 第96-99页 |
| 5.4 Simulation results and discussion | 第99-109页 |
| 5.4.1 Grid independence | 第99页 |
| 5.4.2 Gas-solid flow dynamics | 第99-102页 |
| 5.4.3 Effect of gas velocity UR | 第102-105页 |
| 5.4.4 Effect of gas velocity UH | 第105-106页 |
| 5.4.5 Effect of the mixture composition | 第106页 |
| 5.4.6 Solid mixing performance: ICFB vs BFB | 第106-109页 |
| 5.5 Brief summary | 第109-111页 |
| Summary and future work | 第111-115页 |
| Summary | 第111-113页 |
| Major insights of the present study | 第113-114页 |
| Future recommendations | 第114-115页 |
| References | 第115-126页 |
| Papers published in the period of PhD education | 第126-128页 |
| Acknowledgement | 第128-129页 |
| Resume | 第129页 |
