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Meteorology for Wind Energy : An Introduction

Author: Lars Landberg
Publisher: Wiley, 2015.
Edition/Format:   eBook : Document : English : 1stView all editions and formats
Database:WorldCat
Summary:
Most practitioners within wind energy have only a very basic knowledge about meteorology, leading to a lack of understanding of one of the most fundamental subjects in wind energy. This book will therefore provide an easy-to-understand introduction to the subject of meteorology, as seen from the viewpoint of wind energy. Catering for a range of academic backgrounds, the book is mathematically rigorous with  Read more...
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Landberg, Lars.
Meteorology for Wind Energy : An Introduction.
: Wiley, ©2015
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Lars Landberg
ISBN: 9781118913475 1118913477
OCLC Number: 932058188
Notes: Dedication iii Foreword ix Preface xi Acknowledgements xiii List of Abbreviations xv 1 Introduction 1 2 Meteorological Basics 5 2.1 Why does the wind blow? 5 2.2 The vertical structure of the atmosphere 9 2.3 Atmospheric variables and forces 13 2.3.1 Atmospheric Variables 13 2.3.2 Atmospheric Forces 13 2.3.3 Force Balances and the Geostrophic Wind 16 2.4 Length and time scales of atmospheric flow 20 2.5 Larger-scale systems (aka Weather) 22 2.5.1 Mid-latitudinal cyclone (low-pressure system) 22 2.5.2 Anticyclones (high-pressure systems) 23 2.5.3 Hurricanes 27 2.5.4 Monsoons 27 2.5.5 Climatological circulations 28 2.6 Summary 33 2.7 Exercises 34 3 Measurements 37 3.1 Philosophy: what does it mean to measure? 37 3.2 What do we measure? 40 3.3 Measurement theory 42 3.3.1 Are we good
to go? 48 3.4 Practice 49 3.4.1 Measuring 49 3.4.2 Cup anemometer 52 3.4.3 Wind Vane 54 3.4.4 Sonic Anemometer 55 3.4.5 Hot wire 57 3.4.6 Pitot tube 57 3.4.7 Thermometer 58 3.4.8 Barometer 59 3.4.9 Remote sensing 60 3.4.10 Ceilometer 67 3.4.11 Weather balloon or the Radiosonde 67 3.4.12 Satellite-borne instruments 68 3.5 Summary 71 3.6 Exercises 72 4 The Wind Profile 73 4.1 A hand-waving way of deriving the simple log profile 73 4.2 Working with the log profile 75 4.3 The power law 77 4.4 Averaging times and other dependencies 79 4.5 Two famous profiles 80 4.6 Zero-plane displacement 82 4.7 Internal Boundary Layers (IBL) 83 4.8 Stability 86 4.9 Monin-Obukhov Theory 90 4.10 Deviations with height 94 4.11 Connection with geostrophic drag law 95 4.12 Effect of orography,
obstacles and thermal flows on the profile 96 4.13 Direction profile 96 4.14 Summary 97 4.15 Excercises 97 5 Local Flow 99 5.1 Local effects 100 5.2 Orographic forcing 100 5.2.1 Analytical models 101 5.2.2 Attached flow: Flow in simple terrain 104 5.2.3 Detached flow: Flow in complex terrain 107 5.2.4 More advanced models for flow in complex terrain 109 5.3 Roughness 111 5.4 Obstacles 113 5.5 Thermally-driven flows 116 5.5.1 Sea/land breezes 116 5.5.2 Ana-/katabatic winds 118 5.6 Effect of stability 120 5.7 Summary 120 5.8 Exercises 120 6 Turbulence 123 6.1 What generates turbulence? 125 6.2 Reynolds Decomposition and Averaging 125 6.3 Spectra 126 6.3.1 Understanding Fourier analysis and spectra,
a wind farm 153 7.3 Advanced topics 153 7.3.1 Measuring the wakes 153 7.3.2 Onshore/offshore wakes 155 7.3.3 Very large wind farms, state of the art 156 7.3.4 Wind farm to wind farm interaction 156 7.4 Summary 156 7.5 Exercises 157 8 Modelling 159 8.1 Modelling and what it means 159 8.2 Input 159 8.3 Modelling 160 8.3.1 NWP (Numerical Weather Prediction) models 163 8.3.2 Sub-grid processes 166 8.4 Output 167 8.5 Errors 168 8.6 So, what is a good model? 169 8.7 Chaos 170 8.7.1 Ensemble prediction 171 8.8 Summary 171 8.9 Exercises 173 9 Conclusion 175 References 177 A Cheat sheet 181 B Answers to Exercises 185 C Sample wind speed and direction data 203 Index 205
Description: 1 online resource (224 pages).
Contents: A poor man/woman’s approach 127 6.3.2 Standard types of spectra 131 6.4 Measuring Turbulence 135 6.5 Turbulent Loads 135 6.6 Extreme winds 137 6.7 Summary 137 6.8 Exercises 138 7 Wakes 139 7.1 Turbine-to-turbine wakes 140 7.1.1 The NO Jensen model 142 7.1.2 The Ainslie model 145 7.1.3 Similarity theory 147 7.1.4 Effect on power 149 7.1.5 Wake models, summary 152 7.2 Several wind turbines, i.e.
Responsibility: Lars Landberg.

Abstract:

Most practitioners within wind energy have only a very basic knowledge about meteorology, leading to a lack of understanding of one of the most fundamental subjects in wind energy. This book will therefore provide an easy-to-understand introduction to the subject of meteorology, as seen from the viewpoint of wind energy. Catering for a range of academic backgrounds, the book is mathematically rigorous with accessible explanations for non-mathematically oriented readers. Through exercises in the text and at the end of each chapter the reader will be challenged to think, seek further information and practice the knowledge obtained from reading the book. This practical yet comprehensive reference will enable readers to fully understand the theoretical background of meteorology with wind energy in mind and will include topics such as: measurements; wind profiles; wakes; modelling; turbulence and the fundamentals of atmospheric flow on all scales including the local scale. Key features: - Provides practitioners of wind energy with a solid theoretical grounding in relevant aspects of meteorology enabling them to exercise useful judgment in matters related to resource estimation, wind farm development, planning, turbine design and electrical grids. - Supports a growing area of professional development with the increasing importance of wind energy estimation in all aspects of electrical energy production from wind. - Accompanying website includes data sets for exercises in data analysis, photographs, animations & worked examples, helping to further bridge the gap between theory and practice. Meteorology for Wind Energy: An Introduction is aimed at engineers, developers and project managers in the wind power and electrical utility sectors without the essential theoretical background required to understand the topic. It will also have significant appeal to senior undergraduate and postgraduate students of Wind Energy, Environmental Studies or Renewables Studies.

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