wind energy resource evaluation in a site of central italy ... - WindSim

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CHAPTER 5: Test of the Free Stream Velocity (FSV) page 745.1 Introduction 745.2 Mesoscale model 74Geometrical model 75Numerical model 755.3 Microscale model – evidence of recirculation 77Geometrical model 78Numerical model 785.4 Microscale model – final speed-up maps 81Geometrical model 82Numerical model 835.5 Remarks 84CHAPTER 6: Analysis of the wind field over the site 906.1 Introduction 906.2 Geometrical model 906.3 Numerical model 916.4 Simulations 926.5 Vertical profiles of velocity 94Tower 5424 (Cliff) 94Tower 5428 (Plateau) 976.6 Turbulence Intensity vertical profiles 101Tower 5424 (Cliff) 102Tower 5428 (Plateau) 1056.7 Cross-checking of wind data 108Sector Interpolation 108IV
6.7.1 Mean wind velocity page 1096.7.2 Speed-up 113Period April-May 2007 113Period November-December 2006 1156.8 Remarks 118CHAPTER 7: Proposal for a plant layout 1197.1 Introduction 1197.2 Dataset April-May 5428-50 m 1197.3 Wind resources 1207.4 Annual energy production AEP 1227.5 Remarks 125Conclusions 126Bibliography 128V
Page 1 and 2: UNIVERSITÀ DEGLI STUDI DI CAGLIARI
Page 3 and 4: IndexIndex page IAcknowledgmentsVII
Page 5: CHAPTER 4: Characteristics of the s
Page 9 and 10: This thesis is the result of a prac
Page 11 and 12: WindSim is a software developed by
Page 13 and 14: CHAPTER 1. Atmospheric Boundary Lay
Page 15 and 16: Figure 1.1: Example of an atmospher
Page 17 and 18: 1.5 The WindSim numerical codeWindS
Page 19 and 20: (κ−ε RNG or the Low Reynolds),
Page 21 and 22: 1.5.4 RESULTSThe Results module all
Page 23 and 24: Figure 1.2: Example of TKE vertical
Page 25 and 26: CHAPTER 2. Simulations over flat te
Page 27 and 28: inlet position (0 meters), station
Page 29 and 30: 2.4 Height distribution factor sens
Page 31 and 32: e decreased, to avoid to build thin
Page 33 and 34: Figure 2.10: Vertical profiles for
Page 35 and 36: CHAPTER 3. Simulations over 2D hill
Page 37 and 38: Table 3.1: Measurement coordinatesS
Page 39 and 40: The results shown above demonstrate
Page 41 and 42: Figure 3.6: Sketch of the 15 km lon
Page 43 and 44: Figure 3.9: Influence of the height
Page 45 and 46: Figure 3.13: Zoom of the hill top r
Page 47 and 48: 3.5.2) = ∙.The two models for att
Page 49 and 50: H [m] hill heightν[m 2 /s] air cin
Page 51 and 52: Figure 3.18: Particular of the nume
Page 53 and 54: Finally, the horizontal x velocity
Page 55 and 56: Figure 3.25: Z velocity componentFi
Page 57 and 58:
3.6 RemarksA CFD study of a boundar
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Some experimental wind data of this
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Both the pictures 4.3 and 4.4 have
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Table 4.2: Description of the color
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In this periods, data are recorded
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In the following pages, a short des
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4.3.2 Mast 5424-15 m Period April-M
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4.3.4 Mast 5424-15 m Period Novembe
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4.3.6 Mast 5428-40 m Period April-M
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4.3.8 Mast 5428-50 m Period Novembe
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4.3.10 Mast 5428-30 m Period Novemb
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4.4.2 Mast 542870
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4.5.2 Mast 542872
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CHAPTER 5. Test of the Free Stream
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case the wind is blowing from the e
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Geometrical modelTable 5.3: Input p
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Figure 5.6: Vertical profiles in po
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The orthogonalization of the grid h
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Figure 5.9: Map of speed-ups for di
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Figure 5.30: Speed-2D at 30 m heigh
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Figure 5.12: Speed-2D at 30 m heigh
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CHAPTER 6. Analysis of the wind fie
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Table 6.2: Boundary conditions and
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6.5 Vertical profiles of VelocityTo
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characterized by high wind speed (5
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From the error analysis, it is foun
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Anyhow, the trend of the linear int
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Concerning the CFD simulations, val
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Analyzing RMS error table for tower
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A general overview of the figure 6.
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6.7 Cross Checking of wind dataIn t
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Figure 6.8 a/bFigure 6.8 c/dFigure
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Table 6.11: RMS error for cross che
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Figure 6.9 e/fFigure 6.9 g/hFigure
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Figure 6.10 g/hFigure 6.10 i/lFigur
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to have a better agreement during t
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Figure 7.2: Weibull fitting of the
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Figure 7.5: Perspective view of the
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The calculated AEP has been reporte
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ConclusionsIn this thesis the evalu
Page 137 and 138:
Bibliography[1] CRASTO G. - Numeric
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