MS Thesis R. Hager - Hawaii National Marine Renewable Energy ...

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Figure 4. 17 Details of the Mesh ................................................................................................................... 68Figure 4. 18 Details of the Analysis Settings ................................................................................................ 69Figure 4. 19 Details of the Geometry ........................................................................................................... 69Figure 4. 20 Details of the Structure Selection ............................................................................................ 69Figure 4. 22 Details of the Wave Frequencies ............................................................................................. 70Figure 4. 21 Detials of the Wave Direction ................................................................................................. 70Figure 4. 23 Inserting Solutions ..................................................................................................................... 71Figure 4. 24 Details of the Excitation Force Graph ................................................................................... 71Figure 4. 26 Analysis System Complete ........................................................................................................ 72Figure 4. 25 Exciation Force Results ............................................................................................................ 72Figure 4. 27 Lewis Form Hull ........................................................................................................................ 73Figure 4. 28 Results for Numerical Validation ............................................................................................ 75Figure 4. 29 Maximum Power Absorption Efficiency vs Body Shape ................................................... 78Figure 4. 30 Maximum Power Absorption Efficiency vs Frequency ...................................................... 78Figure 4. 31 Normalized Heave Force Amplitude vs Normalized Frequency at 0 ◦ .............................. 79Figure 4. 32 Normalized Heave Force Amplitude vs Normalized Frequency at 180 ◦ ......................... 79Figure 5. 1 Body Faces Wave Maker (0 ○ ) ..................................................................................................... 84Figure 5. 2 Body Faces Away from Wave Maker (180 ○ ) ............................................................................ 84Figure 5. 3 Wave Flume Set-up ...................................................................................................................... 85Figure 5.4 Body and Aluminum Rod and Plate Attachment ..................................................................... 86Figure 5. 5 Body Set-up ................................................................................................................................... 87Figure 5. 6 Lateral Support System ............................................................................................................... 87Figure 5. 7 Signal Conditioner ....................................................................................................................... 90Figure 5. 8 Applying 5V to the Load Cell .................................................................................................... 90Figure 5. 9 Acquiring Signal Via Right-Mouse Click in Left Panel .......................................................... 93Figure 5. 10 Acquiring Signal Via Add Step Tab ........................................................................................ 93Figure 5. 11 Deleting a Step from Left Panel .............................................................................................. 94Figure 5. 12 Step Set-up for DAQmx Acquire Step ................................................................................... 95Figure 5. 13 Preview for DAQmx Acquire Step in Table Format ........................................................... 95Figure 5. 14 Recording Options, Signal Selection ....................................................................................... 96Figure 5. 15 Recording Options, Log Summary ......................................................................................... 96Figure 5. 16 Adding a Graph or Table .......................................................................................................... 97Figure 5. 17 Right-mouse Click on the Graph ............................................................................................ 98Figure 5. 18 Select Signals Window for a Graph or Table ........................................................................ 98Figure 5. 19 Data View from the Toolbar .................................................................................................... 99Figure 5. 20 Run and Run Continuously from Operate in the Toolbar .................................................. 99Figure 5. 21 Adding a Process Step ............................................................................................................ 100Figure 5. 22 Zero Offset Step Set-up/Output Tab ................................................................................. 100Figure 5. 23 Configuration of Offset ......................................................................................................... 101Figure 5. 24 Filter Step Set-up, Configuration Tab .................................................................................. 102Figure 5. 25 Formula Set-up ........................................................................................................................ 103Figure 5. 26 Wave Gage Labview Set-up .................................................................................................. 104Figure 5. 27 Experimental Lewis Form Hull Body .................................................................................. 105Figure 5. 28 Numerical Model of Lewis Form Hull ................................................................................ 1058
NOMENCLATUREA=incident wave amplitudeα +∞ = radiated wave amplitude at positiveinfinity in two dimensionsα -∞ = radiated wave amplitude at negativeinfinity in two dimensionsB =body lengthB ij =damping coefficientC=phase velocityC g =group velocityd=water depthD = draftρ= water densityE=wave energyF=total hydrodynamic forceF D =diffraction forceF I =Froude-Krylov forceF H =hydrostatic forceF R =radiated wave forceF T =total forceF w =excitation forcef ij =complex force coefficientg=gravitational accelerationH=wave heighti 1k=wave numberk ij =hydrostatic stiffnessKE=kinetic energyL=wavelengthλ=maximum power absorption efficiencyM H =hydrostatic momentM T =total momentM W =excitation momentM ij =added-mass coefficientm ij =mass or mass momentn=unit normalη= water surface elevationp T =total fluid pressurep a =atmospheric pressureP max =maximum absorbed powerP w =power flux of wavePE=potential energy of waveP=absorbed wave powerr=moment armS=body surfaceTE=total energy of waveT=wave periodU n =normal velocity of water columnU j =velocity =volumeXi=complex amplitude of the excitationforceW= body widthω=wave frequencyψ=stream functionФ=real part of the complex total wavepotentialФ D = real part of the complex diffractionpotentialФ I = real part of the complex incidentpotentialФ R = real part of the complex radiationpotentialD =spatial part of the complex diffractionpotentialI =spatial part of the complex incidentpotentialR =spatial part of the complex radiationpotential = real part of the complex radiationjpotential in j th modeI =real part of the spatial part of thecomplex incident potentialξ=complex amplitude of body motionζ=normalized frequency9
Page 1 and 2: Geometric Effects on Maximum Power
Page 3 and 4: ABSTRACTNumerical simulations are c
Page 5 and 6: 3.7 Absorbed Wave Power ...........
Page 7: LIST OF FIGURESFigurePageFigure 1.1
Page 11 and 12: 1.2 Advantages of Wave EnergyAdvant
Page 13 and 14: for various projects. Included in t
Page 15 and 16: pollution would occur from hydrauli
Page 17 and 18: Figure 1. 7 Average Annual Wave Pow
Page 19 and 20: Backer (2009) numerically and exper
Page 21 and 22: CHAPTER 2. WAVE ENERGY CONVERSION D
Page 23 and 24: 2.3 OrientationOrientation is defin
Page 25 and 26: Figure 2.4 Oscillating Water Column
Page 27 and 28: 2.5 Reference PointMeans of reactio
Page 29 and 30: Linear GeneratorTurbineRotary Gener
Page 31 and 32: Table 2. 1 WEC ClassificationsDevic
Page 33 and 34: 33P.T.O.MooringReferencePointOperat
Page 35 and 36: CHAPTER 3. THEORY AND GOVERNING EQU
Page 37 and 38: F(x,z,t) z 0DFDtFt u F 0 0 (4
Page 39 and 40: in ni(13)on S for i=1, 3in( r n)i3
Page 41 and 42: I iAg e ekz i( kx t)(30)cosh( k(z
Page 44 and 45: where ijkis the permutation symbol.
Page 46 and 47: Mw k ieitS( D I) ijkrinjdS(46)3.3.3
Page 48 and 49: Due to Kirchhoff decomposition, rec
Page 50 and 51: TE KE PE 20L Asin(kx) 1 2(61)dV d
Page 52 and 53: P I Iw dS (70)tnSIf the column
Page 54 and 55: 221 2P gA C(77)max g2 3.8 Maximum
Page 56 and 57: 4.2 AQWA Modeling ProcedureThe user
Page 58 and 59:
: Local data has changed, and the c
Page 60 and 61:
Figure 4. 5 Drawing in Design Modul
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12. Delete all lines inside the cur
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22. Edit the details of the slice u
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Figure 4. 15 Details of the Part7.
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Figure 4. 17 Details of the Mesh4.2
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Figure 4. 21 Detials of the Wave Di
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5. Highlight Diffraction + Froude-K
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Table 4.1 Body Dimensions for Numer
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concavity from concave down to conc
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Figure 4. 29 Maximum Power Absorpti
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Table 4. 3 Numerical ResultsBodyNo.
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BodyNo.Bodyλ atT=2.1λ atT=1.0λ a
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WAVEFigure 5. 1 Body Faces Wave Mak
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The body connects to the aluminum p
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also allowed for flexibility in cre
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AB1 23 4 5 6 7CD8 9 10 11EFigure 5.
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and minimum voltage range of the DA
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Figure 5. 11 Deleting a Step from L
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Figure 5. 14 Recording Options, Sig
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Figure 5. 17 Right-mouse Click on t
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Zero-OffsetThe Zero-Offset step rem
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Figure 5. 24 Filter Step Set-up, Co
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5.6 Data ProcessingFigure 5. 26 Wav
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5.8 Experimental DiscussionAs menti
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5.8.3 Suggestions for Future Resear
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110ikxxRekddzkgkn )cosh())(cosh(,
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Proof M ij and B ij are Symmetric T
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BIBILIOGRAPHYANSYS. (n.d.). ANSYS A
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Trust, C. (2011). Capital, Operatin
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MS Thesis R. Hager - Hawaii National Marine Renewable Energy ...

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