-------------------------------------------------------------------------------- ---------------------- FAST PLATFORM FILE -------------------------------------- NREL 5.0 MW offshore baseline floating platform input properties for the ITI Energy barge with 4m draft. ---------------------- FEATURE FLAGS (CONT) ------------------------------------ True PtfmSgDOF - Platform horizontal surge translation DOF (flag) True PtfmSwDOF - Platform horizontal sway translation DOF (flag) True PtfmHvDOF - Platform vertical heave translation DOF (flag) True PtfmRDOF - Platform roll tilt rotation DOF (flag) True PtfmPDOF - Platform pitch tilt rotation DOF (flag) True PtfmYDOF - Platform yaw rotation DOF (flag) ---------------------- INITIAL CONDITIONS (CONT) ------------------------------- 0.0 PtfmSurge - Initial or fixed horizontal surge translational displacement of platform (meters) 0.0 PtfmSway - Initial or fixed horizontal sway translational displacement of platform (meters) 0.0 PtfmHeave - Initial or fixed vertical heave translational displacement of platform (meters) 0.0 PtfmRoll - Initial or fixed roll tilt rotational displacement of platform (degrees) 0.0 PtfmPitch - Initial or fixed pitch tilt rotational displacement of platform (degrees) 0.0 PtfmYaw - Initial or fixed yaw rotational displacement of platform (degrees) ---------------------- TURBINE CONFIGURATION (CONT) ---------------------------- 0.0 TwrDraft - Downward distance from the ground level [onshore] or MSL [offshore] to the tower base platform connection (meters) 0.281768 PtfmCM - Downward distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters) 0.0 PtfmRef - Downward distance from the ground level [onshore] or MSL [offshore] to the platform reference point (meters) ---------------------- MASS AND INERTIA (CONT) --------------------------------- 5452.0E3 PtfmMass - Platform mass (kg) 726.9E6 PtfmRIner - Platform inertia for roll tilt rotation about the platform CM (kg m^2) 726.9E6 PtfmPIner - Platform inertia for pitch tilt rotation about the platform CM (kg m^2) 1453.9E6 PtfmYIner - Platfrom inertia for yaw rotation about the platform CM (kg m^2) ---------------------- PLATFORM (CONT) ----------------------------------------- FltngPtfmLd PtfmLdMod - Platform loading model {0: none, 1: user-defined from routine UserPtfmLd} (switch) "HydroData\Barge" WAMITFile - Root name of WAMIT output files containing the linear, nondimensionalized, hydrostatic restoring matrix (.hst extension), frequency-dependent hydrodynamic added mass matrix and damping matrix (.1 extension), and frequency- and direction-dependent wave excitation force vector per unit wave amplitude (.3 extension) (quoted string) [MAKE SURE THE FREQUENCIES INHERENT IN THESE WAMIT FILES SPAN THE PHYSICALLY-SIGNIFICANT RANGE OF FREQUENCIES FOR THE GIVEN PLATFORM; THEY MUST CONTAIN THE ZERO- AND INFINITE-FREQUENCY LIMITS!] 6000.0 PtfmVol0 - Displaced volume of water when the platform is in its undisplaced position (m^3) [USE THE SAME VALUE COMPUTED BY WAMIT AS OUTPUT IN THE .OUT FILE!] 8 PtfmNodes - Number of platform nodes used in calculation of viscous drag term from Morison's equation (-) 4.0 PtfmDraft - Effective platform draft in calculation of viscous drag term from Morison's equation (meters) 45.1352 PtfmDiam - Effective platform diameter in calculation of viscous drag term from Morison's equation (meters) NOTE: THIS WAS CHOSEN TO GIVE THE SAME CROSS-SECTIONAL AREA AS THE SQUARE BARGE! 0.0 PtfmCD - Effective platform normalized hydrodynamic viscous drag coefficient in calculation of viscous drag term from Morison's equation (-) 0.0 RdtnTMax - Analysis time for wave radiation kernel calculations (sec) [determines RdtnDOmega=Pi/RdtnTMax in the cosine transform] [MAKE SURE THIS IS LONG ENOUGH FOR THE RADIATION IMPULSE RESPONSE FUNCTIONS TO DECAY TO NEAR-ZERO FOR THE GIVEN PLATFORM!] 0.025 RdtnDT - Time step for wave radiation kernel calculations (sec) [DT<=RdtnDT<=0.1 recommended] [determines RdtnOmegaMax=Pi/RdtnDT in the cosine transform] ---------------------- MOORING LINES ------------------------------------------- 8 NumLines - Number of mooring lines (-) 1 LineMod - Mooring line model {1: standard quasi-static, 2: user-defined from routine UserLine} (switch) [used only when NumLines>0] LRadAnch LAngAnch LDpthAnch LRadFair LAngFair LDrftFair LUnstrLen LDiam LMassDen LEAStff LSeabedCD LTenTol [used only when NumLines>0 and LineMod=1] (m) (deg) (m) (m) (deg) (m) (m) (m) (kg/m) (N) (-) (-) [used only when NumLines>0 and LineMod=1] 423.422 23.965 150.0 28.2843 45.0 4.0 473.312 0.0809 130.403 589.0E6 1.0 0.0001 423.422 66.035 150.0 28.2843 45.0 4.0 473.312 0.0809 130.403 589.0E6 1.0 0.0001 423.422 113.965 150.0 28.2843 135.0 4.0 473.312 0.0809 130.403 589.0E6 1.0 0.0001 423.422 156.035 150.0 28.2843 135.0 4.0 473.312 0.0809 130.403 589.0E6 1.0 0.0001 423.422 203.965 150.0 28.2843 225.0 4.0 473.312 0.0809 130.403 589.0E6 1.0 0.0001 423.422 246.035 150.0 28.2843 225.0 4.0 473.312 0.0809 130.403 589.0E6 1.0 0.0001 423.422 293.965 150.0 28.2843 315.0 4.0 473.312 0.0809 130.403 589.0E6 1.0 0.0001 423.422 336.035 150.0 28.2843 315.0 4.0 473.312 0.0809 130.403 589.0E6 1.0 0.0001 ---------------------- WAVES --------------------------------------------------- 1025.0 WtrDens - Water density (kg/m^3) 150.0 WtrDpth - Water depth (meters) [USE THE SAME VALUE SPECIFIED IN THE WAMIT .POT FILE!] 0 WaveMod - Incident wave kinematics model {0: none=still water, 1: plane progressive (regular), 2: JONSWAP/Pierson-Moskowitz spectrum (irregular), 3: user-defind spectrum from routine UserWaveSpctrm (irregular)} (switch) 3630.0 WaveTMax - Analysis time for incident wave calculations (sec) [unused when WaveMod=0] [determines WaveDOmega=2Pi/WaveTMax in the IFFT] 0.25 WaveDT - Time step for incident wave calculations (sec) [unused when WaveMod=0] [0.1<=WaveDT<=1.0 recommended] [determines WaveOmegaMax=Pi/WaveDT in the IFFT] 5.0 WaveHs - Significant wave height of incident waves (meters) [used only when WaveMod=1 or 2] 12.4 WaveTp - Peak spectral period of incident waves (sec) [used only when WaveMod=1 or 2] DEFAULT WavePkShp - Peak shape parameter of incident wave spectrum (-) or DEFAULT (unquoted string) [used only when WaveMod=2] [use 1.0 for Pierson-Moskowitz] 0.0 WaveDir - Incident wave propagation heading direction (degrees) [unused when WaveMod=0] 123456789 WaveSeed(1) - First random seed of incident waves [-2147483648 to 2147483647] (-) [unused when WaveMod=0] 1011121314 WaveSeed(2) - Second random seed of incident waves [-2147483648 to 2147483647] (-) [unused when WaveMod=0] ---------------------- CURRENT ------------------------------------------------- 0 CurrMod - Current profile model {0: none=no current, 1: standard, 2: user-defined from routine UserCurrent} (switch) 0.0 CurrSSV0 - Sub-surface current velocity at still water level (m/s) [used only when CurrMod=1] DEFAULT CurrSSDir - Sub-surface current heading direction (degrees) or DEFAULT (unquoted string) [used only when CurrMod=1] 20.0 CurrNSRef - Near-surface current reference depth (meters) [used only when CurrMod=1] 0.0 CurrNSV0 - Near-surface current velocity at still water level (m/s) [used only when CurrMod=1] 0.0 CurrNSDir - Near-surface current heading direction (degrees) [used only when CurrMod=1] 0.0 CurrDIV - Depth-independent current velocity (m/s) [used only when CurrMod=1] 0.0 CurrDIDir - Depth-independent current heading direction (degrees) [used only when CurrMod=1] ---------------------- OUTPUT (CONT) ------------------------------------------- 1 NWaveKin - Number of points where the incident wave kinematics can be output [0 to 9] (-) 8 WaveKinNd - List of platform nodes that have wave kinematics sensors [1 to PtfmNodes] (-) [unused if NWaveKin=0]