Wind energy: proceedings of the Euromech Colloquium ; with 14 tables
Gespeichert in:
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| Format: | Tagungsbericht Buch |
| Sprache: | English |
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Berlin [u.a.]
Springer
2007
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| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | XXXI, 332 S. Ill., graph. Darst. 24 cm |
| ISBN: | 3540338659 |
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| 245 | 1 | 0 | |a Wind energy |b proceedings of the Euromech Colloquium ; with 14 tables |c Joachim Peinke ... (eds.) |
| 264 | 1 | |a Berlin [u.a.] |b Springer |c 2007 | |
| 300 | |a XXXI, 332 S. |b Ill., graph. Darst. |c 24 cm | ||
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| adam_text | Contents
List of Contributors ............................................XXI
1 Offshore Wind Power Meteorology
Bernhard Lange................................................. 1
1.1 Introduction................................................. 1
1.2 Offshore Wind Measurements................................... 2
1.3 Offshore Meteorology......................................... 2
1.4 Application to Wind Power Utilization........................ 4
1.5 Conclusion .................................................. 5
References........................................................ 5
2 Wave Loads on Wind-Power Plants in Deep
and Shallow Water
Lars Bergdahl. Jenny Trumars and Claes Eskilsson.................. 7
2.1 A Concept of Wave Design in Shallow Areas.................... 7
2.2 Deep-Water Wave Data......................................... 8
2.3 Wave lYansmission into a Shallow Area
Using a Phase-Aver aging Model.............................. 8
2.4 Wave Kinematics............................................. 10
2.5 Example of Wave Loads....................................... 10
2.6 Wave Transmission into a Shallow Area
Using Boussinesq Models.................................... 12
2.7 Conclusions................................................. 12
2.8 Acknowledgements ........................................... 12
References....................................................... 13
3 Time Domain Comparison of Simulated and Measured
Wind Turbine Loads Using Constrained Wind Fields
Wim Bierbooms and Dick: Veldkarnp.............................. 15
3.1 Introduction................................................ 15
3.2 Constrained Stochastic Simulation of Wind Fields............ 15
VIII Contents
3.3 Stochastic Wind Fields which Encompass Measured
Wind Speed Series............................................. 16
3.4 Load Calculations Based on Normal and Constrained Wind
Field Simulations............................................. 18
3.5 Comparison between Measured Loads and Calculated Ones
Based on Constrained Wind Fields ............................. 19
3.6 Conclusion ................................................... 20
References........................................................ 20
4 Mean Wind and Turbulence in the Atmospheric Boundary
Layer Above the Surface Layer
S.E. Larsen, S.E. Gryning, N.O. Jensen, H.E. Jørgensen and J. Mann 21
4.1 Atmospheric Boundary Layers at Larger Heights................ 21
4.2 Data from Høvsøre Test Site................................... 22
4.3 Discussion.................................................... 24
References.......................................................... 25
5 Wind Speed Profiles above the North Sea
J. Tambke, J.Å.T. Bye, B. Lange and J.-O. Wolff................... 27
5.1 Theory of Inertially Coupled Wind Profiles (ICWP) ............ 27
5.2 Comparison to Observations at Horns Rev and FINOl............. 29
References.......................................................... 31
6 Fundamental Aspects of Fluid Flow over Complex Terrain
for Wind Energy Applications
José Fernández Puga, Manfred Fallen and Fritz Ebert......... 33
6.1 Introduction.................................................. 33
6.2 Experimental Setup............................................ 34
6.3 Results....................................................... 35
6.4 Conclusions................................................... 38
References.......................................................... 38
7 Models for Computer Simulation of Wind Flow
over Sparsely Forested Regions
J.C. Lopes da Costa. F.A. Castro and J.M. L.M. Palma,......... 39
7.1 Introduction.................................................. 39
7.2 Mathematical Models........................................... 39
7.3 Results....................................................... 40
7.4 Conclusions................................................... 42
References.......................................................... 42
8 Power Performance via Nacelle Anemometry on Complex
Terrain
Etienne Bibor and Christian Masson.................................. 43
8.1 Introduction and Objectives................................... 43
8.2 Experimental Installations.................................... 43
8.3 Experimental Analysis......................................... 43
Contents
IX
8.4 Numerical Analysis..........................................
8.5 Results and Analysis........................................
8.5.1 Comparaison with the Manufacturer...................
8.5.2 Influence on the Wind Turbine Control ..............
8.5.3 Influence of the Terrain............................
8.5.4 Numerical Validation................................
8.6 Conclusion..................................................
References.......................................................
9 Pollutant Dispersion in Flow Around Bluff-Bodies
Arrangement
Elżbieta Moryń-Kuch orczyk and Renata Gnatowska..................
9.1 Introduction................................................
9.2 Results of Measurements.....................................
9.3 Conclusions.................................................
References.......................................................
10 On the Atmospheric Flow Modelling over Complex Relief
Ivo Sladek, Karel Kozel and Zbynek Jańour........................
10.1 Mathematical Model..........................................
10.1.1 Turbulence Model....................................
10.1.2 Boundary Conditions.................................
10.1.3 Numerical Method ...................................
10.2 Definition of the Computational Case........................
10.2.1 Some Numerical Results .............................
10.3 Conclusion .................................................
References.......................................................
11 Comparison of Logarithmic Wind Profiles and Power
Law Wind Profiles and their Applicability for Offshore
Wind Profiles
Stef an Emcis and Matthias Turk..................................
11.1 Wind Profile Laws...........................................
11.2 Comparison of Profile Laws..................................
11.3 Application to Offshore Wind Profiles.......................
11.4 Conclusions.................................................
References.......................................................
12 Turbulence Modelling and Numerical Flow Simulation
of Turbulent Flows
Claus Wagner.....................................................
12.1 Summary.....................................................
12.2 Introduction................................................
12.3 Governing Equations.........................................
12.4 Direct Numerical Simulation.................................
12.5 Statistical Turbulence Modelling ...........................
44
44
44
44
45
45
46
47
49
49
50
52
52
55
55
56
56
56
57
58
59
59
61
61
61
62
64
64
65
65
65
66
67
67
X Contents
12.6 Subgrid Scale Turbulence Modelling............................... 68
12.6.1 Eddy Viscosity Models.................................... 68
12.6.2 Scale Similarity Modelling............................... 69
12.7 Conclusion....................................................... 70
References............................................................. 70
13 Gusts in Intermittent Wind Turbulence
and the Dynamics of their Recurrent Times
François G. Schmitt.................................................... 73
13.1 Introduction..................................................... 73
13.2 Scaling and Intermittency of Velocity Fluctuations............... 74
13.3 Gusts for Fixed Time Increments
and Their Recurrent Times........................................ 74
13.4 The Dynamics of Inverse Times: Times Needed
for Fluctuations Larger than a Fixed Velocity Threshold ......... 78
References............................................................. 79
14 Report on the Research Project OWID - Offshore Wind
Design Parameter
T. Neumann, S. Emcis and C. lllig..................................... 81
14.1 Summary.......................................................... 81
14.2 Relevant Standards and Guidelines................................ 81
11.3 Normal Wind Profile.............................................. 82
14.4 Normal Turbulence Model.......................................... 82
14.5 Extreme Wind Conditions.......................................... 84
14.6 Outlook.......................................................... 85
14.7 Acknowledgement.................................................. 85
References............................................................. 85
15 Simulation of Turbulence, Gusts and Wakes for Load
Calculations
Jakob Mann............................................................. 87
15.1 Introduction..................................................... 87
15.2 Simulation over Flat Terrain..................................... 87
15.3 Constrained Gaussian Simulation.................................. 89
15.4 Wakes............................................................ 89
15.4.1 Simulation .............................................. 89
15.4.2 Scanning Laser Doppler Wake Measurements................. 90
References............................................................. 92
16 Short Time Prediction of Wind Speeds
from Local Measurements
Holgcr Kanlz, Detlef Holstein, Mario Ragwitz and Nikolay K. Vitanov . 93
16.1 Wind Speed Predictions........................................... 93
16.2 Prediction of Wind Gusts ........................................ 95
References............................................................. 98
Conteiltí։
XI
17 Wind Extremes and Scales: Multifractal Insights
and Empirical Evidence
I. Tchiguirinskaia, D. Schertzer, S. Lovejoy and J.M. Veysseire.. 99
17.1 Atmospheric Dynamics. Cascades and Statistics............... 99
17.2 Extremes................................................... 190
17.3 Discussion and Conclusion.................................. 103
References....................................................... 103
18 Boundary-Layer Influence on Extreme Events in Stratified
Flows over Orography
Karine Leroux and Olivier EiJJ................................... 105
18.1 Introduction............................................... 105
18.2 Experimental Procedure .................................... 106
18.3 Basic Flow Pattern ........................................ 106
18.4 Downstream Slip Condition ................................. 107
18.5 Boundary Layer and Wave Field Interaction.................. 108
18.6 Concluding Remarks......................................... 109
References....................................................... 109
19 The Statistical Distribution of Turbulence Driven
Velocity Extremes in the Atmospheric Boundary Layer
Cartwright/Longuet-Higgins Revised
G.C. Larsen and K.S. Hansen...................................... Ill
19.1 Introduction............................................... Ill
19.2 Model ..................................................... 112
References....................................................... 114
20 Superposition Model for Atmospheric Turbulence
S. Barth, F. Bollcher and J. Pcinkc............................. 115
20.1 Introduction............................................... 115
20.2 Superposition Model........................................ 116
20.3 Conclusions and Outlook.................................... 118
References....................................................... 118
21 Extreme Events Under Low-Frequency Wind Speed
Variability and Wind Energy Generation
Alin A. Cârstea/nu and Jorge J. Castro .......................... 119
21.1 Introduction............................................... 119
21.2 Mathematical Background.................................... 120
21.3 Results and Conclusions.................................... 121
21.4 Acknowledgments............................................ 122
References....................................................... 122
XII Contents
22 Stochastic Small-Scale Modelling of Turbulent Wind
Time Series
Jochen Cleve and Martin Greiner..................................... 123
22.1 Introduction.................................................. 123
22.2 Consistent Modelling of Velocity and Dissipation.............. 123
22.3 Refined Modelling: Stationarity and Skewness.................. 124
22.4 Statistics of the Artificial Velocity Signal.................. 126
References.......................................................... 126
23 Quantitative Estimation of Drift and Diffusion Functions
from Time Series Data
David Kleinhans and Rudolf Friedrich................................ 129
23.1 Introduction.................................................. 129
23.2 Direct Estimation of Drift and Diffusion...................... 130
23.3 Stability of the Limiting Procedure........................... 131
23.4 Finite Length of Time Series.................................. 131
23.5 Conclusion.................................................... 132
References.......................................................... 133
24 Scaling Turbulent Atmospheric Stratification:
A Turbulence/Wave Wind Model
S. Lovejoy and D. Schertzer........................................ 135
24.1 Introduction.................................................. 135
24.2 An Extreme Unlocalized (Wave) Extension....................... 136
References.......................................................... 138
25 Wind Farm Power Fluctuations
P. Sørensen, J. Mann, U.S. Paulsen and A. Vesth................... 139
25.1 Introduction.................................................. 139
25.2 Test Site..................................................... 140
25.3 PSDs.......................................................... 141
25.4 Coherence..................................................... 142
25.5 Conclusion.................................................... 144
References.......................................................... 145
26 Network Perspective of Wind-Power Production
Sebastian Jost, Mirko Schäfer and Martin Greiner.................... 147
26.1 Introduction.................................................. 147
26.2 Robustness in a Critical-Infrastructure Network Model......... 147
26.3 Two Wind-Power Related Model Extensions....................... 151
26.4 Outlook....................................................... 152
References.......................................................... 152
Contents
XIII
27 Phenomenological Response Theory to Predict
Power Output
Alexander Rauh, Edgar Anah.ua, Stephan Barth and Joachim Peinke . . 153
27.1 Introduction................................................. 153
27.2 Power Curve from Measurement Data............................ 154
27.3 Relaxation Model............................................. 156
27.4 Discussion and Conclusion.................................... 157
References......................................................... 158
28 Turbulence Correction for Power Curves
K. Kaiser, W. Langreder, H. Hohlen and J. Hojstrup................ 159
28.1 Introduction................................................. 159
28.2 Turbulence and Its Impact on Power Curves.................... 160
28.3 Results...................................................... 161
28.4 Conclusion .................................................. 162
References......................................................... 162
29 Online Modeling of Wind Farm Power
for Performance Surveillance and Optimization
J.J. Trujillo, A. Weasel, I. Waldl and B. Lange.................... 163
29.1 Wind Turbine Power Modeling Approach......................... 163
29.1.1 Wind Farm Model....................................... 163
29.1.2 Online Wind Farm Model................................ 164
29.2 Measurements and Simulation.................................. 164
29.3 Results...................................................... 165
References......................................................... 166
30 Uncertainty of Wind Energy Estimation
T. Weidinger, A. Kiss, A.Z. Gyöngyösi, K. Krassován and B. Papp ... 167
30.1 Introduction................................................. 167
30.2 Wind Climate of Hungary...................................... 167
30.3 The Uncertainty of the Power Law Wind Profile Estimation .... 169
30.4 Inter-Annual Variability of Wind Energy...................... 169
30.5 Conclusion .................................................. 170
References......................................................... 170
31 Characterisation of the Power Curve for Wind Turbines
by Stochastic Modelling
E. Anahua, S. Barth and J. Peinke................................ 173
31.1 Introduction................................................. 173
31.2 Simple Relaxation Model...................................... 174
31.3 Langcvin Method.............................................. 175
31.4 Data Analysis................................................ 175
31.5 Conclusion and Outlook....................................... 176
References......................................................... 177
XIV Contents
32 Handling Systems Driven by Different Noise Sources:
Implications for Power Curve Estimations
F. Bditcher, J. Peinke. D. Kleinhans and R. Friedrich............ 179
32.1 Power Curve Estimation in a Turbulent Environment......... 179
32.1.1 Reconstruction of a Synthetic Power Curve........... 180
32.1.2 Additional Noise..................................... 182
32.2 Conclusions and Outlook...................................... 182
References........................................................ 182
33 Experimental Researches of Characteristics of Windrotor
Models with Vertical Axis of Rotation
Stanislav Dovgy, Vladymyr Kay an and Victor Kochin............ 183
33.1 Introduction................................................. 183
33.2 Experimental Installation and Models......................... 184
33.3 Performance Characteristics of Windrotor Models.............. 184
33.4 Results...................................................... 186
34 Methodical Failure Detection in Grid Connected
Wind Parks
Detlcf Schulz, Kaspar Knorr and Rolf Hanitsch...................... 187
34.1 Problem Description.......................................... 187
34.2 Doubly-fed Induction Generators.............................. 187
34.3 Measurements ................................................ 188
34.4 Conclusions.................................................. 190
References......................................................... 190
35 Modelling of the Transition Locations
on a 30% thick Airfoil with Surface Roughness
Benjamin Hillmer, Yun Sun Choi and Alois Peter Schaffarczyk....... 191
35.1 Introduction................................................. 191
35.2 Measurements ................................................ 192
35.3 Modelling.................................................... 192
35.4 Results and Discussion....................................... 193
35.5 Conclusions.................................................. 195
References......................................................... 196
36 Helicopter Aerodynamics with Emphasis Placed
on Dynamic Stall
Wolfgang Geissler, Markus Raffcl, Guido Dietz and Holger Mai...... 199
36.1 Introduction................................................. 199
36.2 The Phenomenon Dynamic Stall ................................ 200
36.3 Numerical and Experimental Results
for the Typical Helicopter Airfoil OA209 .................... 201
36.4 Conclusions.................................................. 203
References......................................................... 204
Contents XV
37 Determination of Angle of Attack (AOA) for Rotating
Blades
Wen Zhong Sheri, Marlin O.L. Hansen and, Jens N ørkær Sørensen .... 205
37.1 Introduction................................................. 205
37.2 Determination of Angle of Attack ............................ 206
37.3 Numerical Results and Comparisons............................ 207
37.4 Conclusion .................................................. 209
References......................................................... 209
38 Unsteady Characteristics of Flow Around an Airfoil
at High Angles of Attack and Low Reynolds Numbers
Hui Guo, Hongxing Yang, Yu Zhou and David Wood.................... 211
38.1 Introduction................................................. 211
38.2 Test Facility and Setup...................................... 211
38.3 Experimental Results arid Discussions........................ 212
38.4 Conclusions.................................................. 214
References......................................................... 214
39 Aerodynamic Multi-Criteria Shape Optimization
of VAWT Blade Profile by Viscous Approach
Rèmi Bourguet, Guillaume. Martina/,, Gilles Harmn
and Marianna Hmza.................................................. 215
39.1 Introduction................................................. 215
39.2 Physical Model............................................... 215
39.2.1 Templin Method for Efficiency Graphe Computation .... 215
39.2.2 Flow Simulation...................................... 215
39.3 Blade Profile Optimization .................................. 216
39.3.1 Optimization Method: DOE/RSM......................... 216
39.3.2 Reaching the Global Optimum.......................... 217
39.4 Numerical Results............................................ 217
39.4.1 Validation Results................................... 217
39.4.2 Optimization Results................................. 217
39.5 Conclusion’and Prospects .................................... 218
References......................................................... 218
40 Rotation and Turbulence Effects on a HAWT Blade
Airfoil Aerodynamics
Christophe Sicot. Philippe Demnanl, Stephane Loger
and Jacques Hureau................................................. 221
40.1 Introduction................................................. 221
40.2 Experiment................................................... 221
40.3 Results and Discussion....................................... 222
40.3.1 Mean Pressure Values Analysis........................ 222
40.3.2 Instantaneous Pressure Distributions Analysis........ 224
40.4 Conclusion .................................................. 225
References......................................................... 225
XVI
Contents
41 3D Numerical Simulation and Evaluation of the Air Flow
Through Wind Turbine Rotors with Focus on the Hub Area
J. Rauch, T. Krämer, B. Heinzdmann, J. Twelc and P. U. Thamsen . . 227
41.1 Introduction............................................... 227
41.2 Method..................................................... 228
41.3 Results.................................................... 228
41.4 Perspective................................................ 230
References....................................................... 230
42 Performance of the Risø-Bi Airfoil Family for Wind
Turbines
Christian Bak, Mac Gaunaa and loannis Antoniou................... 231
42.1 Introduction............................................... 231
42.2 The Wind Tunnel ........................................... 231
42.3 Results.................................................... 232
42.4 Conclusions................................................ 233
42.5 Acknowledgements .......................................... 234
References....................................................... 234
43 Aerodynamic Behaviour of a New Type of Slow-Running
VAWT
J.-L. Menet...................................................... 235
43.1 Introduction............................................... 235
43.2 Description of the Savonius Rotors ........................ 236
43.3 Description of the Numerical Model......................... 236
43.4 Results ................................................... 237
43.4.1 Optimised Savonius Rotor........................... 237
43.4.2 The New Rotor...................................... 238
43.5 Conclusion ................................................ 239
References....................................................... 239
44 Numerical Simulation of Dynamic Stall using Spectral/hp
Method
B. Stoevesandt, J. Peinke, A. Shishkin and C. Wagner............ 241
44.1 Introduction............................................... 241
44.2 The Spectral/hp Method..................................... 242
44.3 The NekTar Code............................................ 243
44.4 First Results.............................................. 244
44.5 Outlook.................................................... 244
References....................................................... 244
45 Modeling of the Far Wake behind a Wind Turbine
Jens N. Sørensen and Valery L. Okulov............................ 245
45.1 Extended Joukowski Model................................... 245
45.2 Unsteady Behavior.......................................... 247
Contents XVII
45.3 Conclusions.................................................. 248
References........................................................ 248
46 Stability of the Tip Vortices in the Far Wake
behind a Wind Turbine
Valery L. Okulov and Jens N. Sørensen.............................. 249
46.1 Theory: Analysis of the Stability............................ 249
46.2 Application of the Analysis.................................. 251
46.3 Conclusions.................................................. 251
References........................................................ 252
47 Modelling Turbulence Intensities Inside Wind Farms
Arne Weasel, Joachim Peinke and Bernhard Lange.................... 253
47.1 Description of the Model..................................... 253
47.1.1 Single Wake Model.................................... 253
47.1.2 Superposition of the Wakes........................... 254
47.2 Comparison of the Model with Wake Measurements............... 254
47.2.1 Vindeby Double and Quintuple Wake.................... 254
47.3 Conclusion .................................................. 255
References......................................................... 256
48 Numerical Computations of Wind Turbine Wakes
Stefan Ivanell, Jens N. Sørensen and Dan Henningson................ 259
48.1 Numerical Method............................................. 259
48.2 Simulation................................................... 260
References......................................................... 263
49 Modelling Wind Turbine Wakes with a Porosity Concept
Sandiine Aubrun.................................................... 265
49.1 Introduction................................................. 265
49.2 Experimental Set-up.......................................... 265
49.3 Results for Homogeneous Frccstrcam Conditions ............... 266
49.4 Results for Shear Freestream Conditions...................... 267
49.5 Conclusion .................................................. 269
References......................................................... 269
50 Prediction of Wind Turbine Noise Generation
and Propagation based on an Acoustic Analogy
Drago§ Moroianu and Laszlo Fuchs................................... 271
50.1 Introduction................................................. 271
50.2 Problem Definition .......................................... 271
50.3 Results...................................................... 272
50.3.1 Flow Computations.................................... 272
50.3.2 Acoustic Computations................................ 273
50.3.3 Conclusions ......................................... 274
References......................................................... 274
XVIII
Content,!։
51 Comparing WAsP and Fluent for Highly Complex Terrain
Wind Prediction
D. Cabtzon. A. Iniest.a, E. Ferrer and I. Marti.................... 275
51.1 Introduction.................................................. 275
51.2 Alaiz Test Site............................................... 275
51.5 Description of the Models..................................... 276
51.3.1 Linear Models. WAsP 8.1 (Wind Atlas Analysis
and Application Program) and WAsP Engineering 2.0 . . 276
51.3.2 Non Linear Models. Fluent 6.2......................... 276
51.4 Results....................................................... 276
51.4.1 Wund Speed............................................ 276
51.4.2 Turbulence Intensity.................................. 279
51.5 Conclusions................................................... 279
References.......................................................... 279
52 Fatigue Assessment of Truss Joints Based on Local
Approaches
H. Th. Beier, .7. Lange and M. Vormwald............................ 281
52.1 Introduction.................................................. 281
52.2 Concepts...................................................... 281
52.2.1 Fatigue Tests......................................... 282
52.2.2 Crack Initiation with Local Strain Approach........... 282
52.2.3 Crack Growth with Linear Elastic Fracture Mechanics . . 283
52.2.4 Fracture Criterion.................................... 284
52.2.5 Endurance Limit with Local Stress Approach............ 284
52.3 Examples...................................................... 284
52.3.1 Truss-joint with Pre-cut Gusset Plates (PCGP-joinl) ... 284
52.3.2 Stiffener of the Great Wind Energy
Converter GROWIAN..................................... 284
52.4 Conclusion ................................................... 285
References.......................................................... 286
53 Advances in Offshore Wind Technology
Marc Seidel and Jens Goflwein..................................... 287
53.1 Introduction.................................................. 287
53.2 Wind Turbine Technology....................................... 287
53.3 Substructure Technology....................................... 289
53.3.1 Design Methodologies.................................. 289
53.3.2 Substructure Concepts................................. 290
53.4 Installation Methods.......................................... 290
References.......................................................... 291
Contents
XIX
54 Benefits of Fatigue Assessment with Local Concepts
P. Schaumann and F. Wilke........................................ 293
54.1 Introduction................................................ 293
54.2 Applied Local Concepts...................................... 293
54.3 Comparison of Fatigue Design for a Tripod................... 294
54.4 Conclusion.................................................. 296
References........................................................ 296
55 Extension of Life Time of Welded Fatigue Loaded
Structures
Thomas Ummenhofer. Imke Wcich and Thomas Nilschke-Pagcl....... 297
55.1 Introduction................................................ 297
55.2 Background.................................................. 297
55.2.1 Weld Improvement Methods............................. 297
55.3 Experimental Studies........................................ 298
55.3.1 resting Parameters.................................. 298
55.4 Results..................................................... 298
55.4.1 Initial State of the Fatigue Test Samples............ 298
55.4.2 Results of the Fatigue Tests ........................ 299
55.5 Conclusions................................................. 300
References........................................................ 300
56 Damage Detection on Structures of Offshore Wind
Turbines using Multiparameter Eigenvalues
Johannes Reetz.................................................... 301
56.1 Introduction................................................ 301
56.2 The Mi lit, ¡parameter Eigenvalue Method.................... 301
56.3 Validation of the Method.................................... 303
56.4 Outlook..................................................... 304
References........................................................ 304
57 Influence of the Type and Size of Wind Turbines
on Anti-Icing Thermal Power Requirements for Blades
L. Battisti, R. Fedrizzi, S. Dal Savio and A. Ciovannelli........ 305
57.1 Introduction................................................ 305
57.2 Analysis of the Results..................................... 306
57.3 Anti-Icing Power as a Function of the Machine Size.......... 306
57.4 Anti-Icing Power as a Function of the Machine Type.......... 307
57.5 Conclusions................................................. 307
References........................................................ 308
58 High-cycle Fatigue of “Ultra-High Performance Concrete”
and “Grouted Joints” for Offshore Wind Energy Turbines
L. Lohaus and S. Anders.......................................... 309
58.1 Introduction................................................ 309
58.2 Ultra-High Performance Concrete ............................ 309
XX Contents
58.3 Ultra-High Performance Concrete in Grouted Joints............ 310
58.4 Conclusions.................................................. 311
References........................................................ 312
59 A Modular Concept for Integrated Modeling of Offshore
WEC Applied to Wave-Structure Coupling
Kim Mittendorf. Martin Kohlmeier, Abderrahmane Habbar and
Werner Zielke...................................................... 313
59.1 Introduction................................................. 313
59.2 Integrated Modeling.......................................... 313
59.2.1 Model Concept ....................................... 315
59.2.2 Model Realization.................................... 315
59.3 Modeling of Wave Loads on the Support Structure Offshore
Wind Energy Turbines......................................... 316
59.3.1 Application to the Support Structure of an Offshore
Wind Turbine ........................................ 316
59.4 Future Demands .............................................. 317
References......................................................... 317
60 Solutions of Details Regarding Fatigue
and the Use of High-Strength Steels for Towers of Offshore
Wind Energy Converters
J. Bergers, II. Huhn and R. Puthli................................. 319
60.1 Introduction................................................. 319
60.2 Fatigue Tests................................................ 320
60.3 Finite-Element Analyses...................................... 321
References......................................................... 324
61 On the Influence of Low-Level Jets on Energy Production
and Loading of Wind Turbines
N. Cosack, S. Emeis and M. Kuhn................................... 325
61.1 Introduction................................................. 325
61.2 Data and Methods............................................. 325
61.3 Results...................................................... 326
61.4 Conclusions.................................................. 327
References......................................................... 328
62 Reliability of Wind Turbines
Berthold Hahn, Michael Durstewitz and Kurt Rohrig.................. 329
62.1 Introduction................................................. 329
62.2 Data Basis .................................................. 329
62.3 Break Down of Wind Turbines.................................. 330
62.4 Malfunctions of Components................................... 331
62.5 Conclusion .................................................. 332
References......................................................... 332
|
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| indexdate | 2024-07-09T21:37:07Z |
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| spelling | Wind energy proceedings of the Euromech Colloquium ; with 14 tables Joachim Peinke ... (eds.) Berlin [u.a.] Springer 2007 XXXI, 332 S. Ill., graph. Darst. 24 cm txt rdacontent n rdamedia nc rdacarrier Windkraftmaschine (DE-588)4272490-9 gnd rswk-swf Windenergie (DE-588)4079329-1 gnd rswk-swf (DE-588)1071861417 Konferenzschrift 2005 Oldenburg Oldenburg gnd-content Windenergie (DE-588)4079329-1 s DE-604 Windkraftmaschine (DE-588)4272490-9 s Peinke, Joachim 1956- (DE-588)112782817 edt Euromech Colloquium 464 b 2005 Oldenburg (Oldenburg) Sonstige (DE-588)6061865-6 oth KOBV Fremddatenuebernahme application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=017444162&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Wind energy proceedings of the Euromech Colloquium ; with 14 tables Windkraftmaschine (DE-588)4272490-9 gnd Windenergie (DE-588)4079329-1 gnd |
| subject_GND | (DE-588)4272490-9 (DE-588)4079329-1 (DE-588)1071861417 |
| title | Wind energy proceedings of the Euromech Colloquium ; with 14 tables |
| title_auth | Wind energy proceedings of the Euromech Colloquium ; with 14 tables |
| title_exact_search | Wind energy proceedings of the Euromech Colloquium ; with 14 tables |
| title_full | Wind energy proceedings of the Euromech Colloquium ; with 14 tables Joachim Peinke ... (eds.) |
| title_fullStr | Wind energy proceedings of the Euromech Colloquium ; with 14 tables Joachim Peinke ... (eds.) |
| title_full_unstemmed | Wind energy proceedings of the Euromech Colloquium ; with 14 tables Joachim Peinke ... (eds.) |
| title_short | Wind energy |
| title_sort | wind energy proceedings of the euromech colloquium with 14 tables |
| title_sub | proceedings of the Euromech Colloquium ; with 14 tables |
| topic | Windkraftmaschine (DE-588)4272490-9 gnd Windenergie (DE-588)4079329-1 gnd |
| topic_facet | Windkraftmaschine Windenergie Konferenzschrift 2005 Oldenburg Oldenburg |
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