-------------------------------------------------------------------------------- ---------------------- FAST PLATFORM FILE -------------------------------------- NREL 5.0 MW offshore baseline floating platform input properties for the OC3-Hywind spar-buoy. ---------------------- FEATURE FLAGS (CONT) ------------------------------------ False PtfmSgDOF - Platform horizontal surge translation DOF (flag) False PtfmSwDOF - Platform horizontal sway translation DOF (flag) False PtfmHvDOF - Platform vertical heave translation DOF (flag) False PtfmRDOF - Platform roll tilt rotation DOF (flag) True PtfmPDOF - Platform pitch tilt rotation DOF (flag) False 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) ---------------------------- -10.0 TwrDraft - Downward distance from the ground level [onshore] or MSL [offshore] to the tower base platform connection (meters) 89.9155 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) --------------------------------- 7466.33E3 PtfmMass - Platform mass (kg) 4229.23E6 PtfmRIner - Platform inertia for roll tilt rotation about the platform CM (kg m^2) 4229.23E6 PtfmPIner - Platform inertia for pitch tilt rotation about the platform CM (kg m^2) 164.23E6 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\Spar" 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!] 8029.21 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!] 240 PtfmNodes - Number of platform nodes used in calculation of viscous drag term from Morison's equation (-) 120.0 PtfmDraft - Effective platform draft in calculation of viscous drag term from Morison's equation (meters) 6.5 PtfmDiam - Effective platform diameter in calculation of viscous drag term from Morison's equation (meters) 0.6 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!] 0.01 RdtnDT - Time step for wave radiation kernel calculations (sec) [DT<=RdtnDT<=0.1 recommended] [determines RdtnOmegaMax=Pi/RdtnDT in the cosine transform] ---------------------- MOORING LINES ------------------------------------------- 3 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] 853.87 0.0 320.0 5.2 0.0 70.0 902.2 0.09 77.7066 384.243E6 0.0 0.0000001 853.87 120.0 320.0 5.2 120.0 70.0 902.2 0.09 77.7066 384.243E6 0.0 0.0000001 853.87 240.0 320.0 5.2 240.0 70.0 902.2 0.09 77.7066 384.243E6 0.0 0.0000001 ---------------------- WAVES --------------------------------------------------- 1025.0 WtrDens - Water density (kg/m^3) 320.0 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] 6.0 WaveHs - Significant wave height of incident waves (meters) [used only when WaveMod=1 or 2] 10.0 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] 123123123 WaveSeed(1) - First random seed of incident waves [-2147483648 to 2147483647] (-) [unused when WaveMod=0] 321321321 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] (-) 240 WaveKinNd - List of platform nodes that have wave kinematics sensors [1 to PtfmNodes] (-) [unused if NWaveKin=0]