| Acknowlegements | 第4-5页 |
| 摘要 | 第5-9页 |
| Abstract | 第9-10页 |
| Chapter 1 Introduction | 第13-21页 |
| 1.1 Project origin and the purpose and significance of the study | 第13-15页 |
| 1.1.1 Project sources | 第13页 |
| 1.1.2 The purpose and significance of the study | 第13-15页 |
| 1.2 Research study and analysis | 第15-19页 |
| 1.2.1 Site measurement of Typhoon wind field | 第15-16页 |
| 1.2.2 Characteristics of turbulent coherent structures | 第16-18页 |
| 1.2.3 Evolutionary spectra estimation using wavelets | 第18-19页 |
| 1.3 The main contents | 第19-21页 |
| Chapter 2 Turbulence characteristics and field measurement | 第21-37页 |
| 2.1 Introduction | 第21页 |
| 2.2 Optimization of observation system | 第21-23页 |
| 2.3 Measuring Normal wind and typhoons near the earth and analysis their fluctuating characteristic | 第23-25页 |
| 2.3.1 Introduction of observation site | 第23-24页 |
| 2.3.2 Typhoon Hagupit | 第24-25页 |
| 2.4 Characteristic analysis of Hagupit typhoons and normal wind | 第25-36页 |
| 2.4.1 Quality control and data processing of measured data | 第25-26页 |
| 2.4.2 Hagupit Typhoons and normal wind average characteristic analysis | 第26-27页 |
| 2.4.3 Analysis of fluctuating wind characteristics of hagupit typhoon andnormal wind | 第27-36页 |
| 2.5 The Chapter Summary | 第36-37页 |
| Chpater 3 Analysis of characteristics of turbulent coherence structure | 第37-66页 |
| 3.1 Introduction | 第37-38页 |
| 3.2 Extraction of turbulent coherent structures | 第38-44页 |
| 3.2.1 Coherent structures of turbulence theory and method | 第38-39页 |
| 3.2.2 Extraction of multi-scale coherence structures using discrete Wavelet transform | 第39-41页 |
| 3.2.3 Coherent structure extraction method (DWT ) | 第41-43页 |
| 3.2.4 Results of Discrete wavelet Transform | 第43-44页 |
| 3.3 Analysis of characteristics of turbulent coherent structures | 第44-58页 |
| 3.3.1 Using continuous Wavelet transforms method to extract the coherent structure | 第44-46页 |
| 3.3.2 Coherent structure in normal air extraction | 第46-49页 |
| 3.3.3 Typhoon hagupit coherent structure extraction results | 第49-50页 |
| 3.3.4 Spectral analysis principle of wavelet coefficients | 第50-54页 |
| 3.3.5 Characteristic analysis of coherent structure | 第54-58页 |
| 3.4 Analysis of influence of turbulent coherent structures | 第58-64页 |
| 3.4.1 Effect of correlation coefficient | 第58页 |
| 3.4.2 Influence on the turbulent intermittence | 第58-60页 |
| 3.4.3 Effect on turbulent Gauss | 第60-61页 |
| 3.4.4 Peak gust factor and impact factor | 第61-64页 |
| 3.5 The chapter summary | 第64-66页 |
| Chapter4 Straightforward approach based in discrete wavelet transform for estimating the evolutionary power spectral density of nonstationary winds | 第66-87页 |
| 4.1 Introduction | 第66-67页 |
| 4.2 Discrete wavelet transform | 第67-70页 |
| 4.3 Family of Daubechies Mother wavelet functions | 第70-72页 |
| 4.4 Field measurements and speed characteristics of winds produced by typhoon hagupit | 第72-77页 |
| 4.5 Methodology for estimating the evolutionary power density of anonstationary random process | 第77-80页 |
| 4.6 Results and discussion | 第80-86页 |
| 4.7 The chapter summary | 第86-87页 |
| Concluding remarks | 第87-89页 |
| References | 第89-94页 |
