论文目录 | |
| 摘要 | 第1-4页 |
| Abstract | 第4-8页 |
| Chapter 1 Introduction | 第8-24页 |
| 1.1 Research background | 第8-11页 |
| 1.2 Literature review | 第11-23页 |
| 1.2.1 Experimental and numerical research of bulb turbines | 第11-16页 |
| 1.2.2 Influence factors on unit performances in low-head turbines | 第16-20页 |
| 1.2.3 Intake head losses in hydraulic turbines | 第20-23页 |
| 1.3 Objectives and main contents | 第23-24页 |
| Chapter 2 Numerical model establishment for predicting prototype performances | 第24-34页 |
| 2.1 Tidal power turbine prototype | 第24-25页 |
| 2.2 Approaches and assumptions for two-phase flow fields | 第25-26页 |
| 2.3 Numerical method | 第26-32页 |
| 2.3.1 Governing equations for two-phase three-component flow | 第26-27页 |
| 2.3.2 Turbulence modeling | 第27-28页 |
| 2.3.3 Cavitation model | 第28页 |
| 2.3.4 Computational domain and boundary condition | 第28-31页 |
| 2.3.5 Grid independence study | 第31-32页 |
| 2.4 Verification | 第32页 |
| 2.5 Summary | 第32-34页 |
| Chapter 3 Comparative study of performance prediction models for tidal power turbines | 第34-47页 |
| 3.1 Introduction | 第34页 |
| 3.2 Numerical prediction models for prototype turbines | 第34-35页 |
| 3.3 Simulation results predicted by different models | 第35-46页 |
| 3.3.1 Comparison to the test result | 第35-36页 |
| 3.3.2 Internal flow characteristics in turbine | 第36-40页 |
| 3.3.3 Hydraulic performances with cavitation | 第40-43页 |
| 3.3.4 Hydraulic loss analysis | 第43-46页 |
| 3.4 Summary | 第46-47页 |
| Chapter 4 Analysis on effect of intake vortices on prototype unit performances | 第47-68页 |
| 4.1 Introduction | 第47页 |
| 4.2 Approach flow behaviors and effects on the intake channel flow | 第47-56页 |
| 4.2.1 Intake design effect | 第47-49页 |
| 4.2.2 Intake vortex effect | 第49-54页 |
| 4.2.3 Upstream water level effect | 第54-56页 |
| 4.3 Hydraulic loss analysis on turbine inflow conditions | 第56-60页 |
| 4.3.1 Methodology | 第56页 |
| 4.3.2 Loss coefficient estimation | 第56-60页 |
| 4.4 Analysis of inflow non-uniformity effect on hydraulic performances | 第60-67页 |
| 4.5 Summary | 第67-68页 |
| Chapter 5 Proposal of a model test method in low-head tidal power turbines | 第68-89页 |
| 5.1 Introduction | 第68页 |
| 5.2 Scale effects between prototype and model units | 第68-72页 |
| 5.3 Water tank modeling based on geometric similarity | 第72-75页 |
| 5.4 Effect of water tank modeling on turbine model performance | 第75-82页 |
| 5.4.1 Approaches on water tank modeling | 第75-76页 |
| 5.4.2 Flow simulation in the model unit including water tank models | 第76-82页 |
| 5.5 Prototype performance prediction considering inflow conditions | 第82-87页 |
| 5.5.1 Effect of water tank modeling on model cam-curves | 第83-85页 |
| 5.5.2 Prediction under the geometric similarity for whole flow passage | 第85-87页 |
| 5.6 Summary | 第87-89页 |
| Chapter 6 Conclusions and future work | 第89-93页 |
| 6.1 Main concluding remarks | 第89-91页 |
| 6.2 Innovation points | 第91页 |
| 6.3 Future work | 第91-93页 |
| References | 第93-99页 |
| 致谢 | 第99-101页 |
| Resume and published papers | 第101-103页 |
