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SWAN模型在缅甸海岸区域的应用

作　者: 苏月蕾
导　师: 严以新
学　校: 河海大学
专　业: 港口、海岸及近海工程
关键词: numerical simulation wind-generated waves SWAN model wave characteristics wave hind-casting
分类号: TV139.2
类　型: 硕士论文
年　份: 2006年
下　载: 143次
引　用: 0次
阅　读: 论文下载

内容摘要

Increased utilization of the coastal zone to a multitude of activities including various shoreline developments related to transportation, tourism, fish farming and the increasing the wind and wave energy industries have lead to a growing demand for reliable information on the wave conditions.Waves are one of the dominant phenomena that shape a coastline: they are largely responsible for beach erosion, long shore drift and elevated water levels. Waves transport energy from remote area of the ocean to the coastline. When unleashed in the breaking process, this energy erodes beaches and can damage and destroy coastal structures such as sea walls, jetties and breakwaters.In many engineering studies, knowledge of the operational or of the extreme wave conditions in coastal waters including estuaries, tidal inlets, barriers islands with tidal flats channel etc; is required.In this thesis, I would like to describe the prediction and characteristics of wave in coastal regions. Mostly to determine the coastal wave climate and characteristics for the purpose of design of coastal structures and off-shore operations by using numerical simulation. Due to the absence of field data, numerical simulation becomes more important.To obtain realistic estimates of random, short-crested wind-generated waves in such condition for a given bottom topography, wind field, water level and current field, the numerical wave model SWAN (Simulating WAves Nearshore) can be used. SWAN wave model can be used not only for helping us to realize the wave effects on the coastal structures but also to predict the wave climate and characteristics in wave hind-casting.

全文目录

ABSTRACT  6-11
CHAPTER 1 INTRODUCTION  11-23
  1.1 General  11-14
  1.2 Model Introduction  14-15
  1.3 Study Area Introduction  15-16
  1.4 Outline of Thesis  16-23
CHAPTER 2 LITERATURE REVIEW OF WAVE SPECTRUM  23-37
  2.1 Introduction  23-24
  2.2 Linear Wave Theory  24-26
  2.3 Development of Wave Prediction Methods  26-34
  2.4 Classification of Ocean Wave Models  34-35
  2.5 Review of Harbor Wave Modeling  35-37
    2.5.1 Phase-resolving model  36
    2.5.2 Phase-averaged model  36-37
Chapter 3 THE SWAN MODEL  37-56
  3.1 Introduction  37
  3.2 Model Description  37-48
    3.2.1 Input by wind (S_(in))  38-40
      3.2.1.1 Linear growth by wind  38
      3.2.1.2 Exponential growth by wind  38-40
    3.2.2 Dissipation of wave energy (S_(ds))  40-43
      3.2.2.1 White-capping  40-41
      3.2.2.2 Bottom friction  41-42
      3.2.2.3 Depth-induced wave breaking  42-43
    3.2.3 Nonlinear wave-wave interactions(S_(nl))  43-47
      3.2.3.1 Quadruplet wave-wave interactions  45-46
      3.2.3.2 Triad wave-wave interactions  46-47
    3.2.4 Obstacles  47-48
  3.3 Numerical implementation  48-56
    3.3.1 Propagation  48-51
    3.3.2 Curvilinear grid  51
    3.3.3 Boundary conditions  51-52
    3.3.4 Generation, wave-wave interactions and dissipation  52-53
    3.3.5 Action limiting and frequency-dependent under-relaxation  53-56
CHAPTER 4 CALCULATION AND ANALYSIS  56-82
  4.1 Weather Condition in Study Area  56
  4.2 Computational Part of Model  56-57
  4.3 Boundary Conditions  57-58
  4.4 Validations for Calculation and Analysis  58-82
    4.4.1. Nested Area(1)  63-66
    4.4.2. Nested Area(2)  66-82
CHAPER 5 SUMMARY AND CONCLUSION  82-83
  5.1 Summary  82
  5.2 Conclusion  82-83
REFERENCES  83-86

SWAN模型在缅甸海岸区域的应用

内容摘要

全文目录

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