Hi all, I decided to upgrade the OpenFAST and the IEA 15MW wind turbine model I use, in my windows machine, to the following versions:
- OpenFAST 3.4.1, downloaded
- IEA 15MW wind turbine model 1.1.4
I have downloaded the libdiscon.dll for the ROSCO v2.7.0, from here (since in IEA-15-240-RWT-UMaineSemi_DISCON.IN is written “- File written using ROSCO version 2.7.0 controller tuning logic on 03/14/23”
I then go to:
IEA-15-240-RWT-master\OpenFAST\IEA-15-240-RWT-UMaineSemi\IEA-15-240-RWT-UMaineSemi_ServoDyn.dat
and substitute at line 77 the original:
"/usr/share/miniconda3/envs/test/lib/libdiscon.so"
with the libdiscon.dll downloaded from the ROSCO 2.7.0 link above.
ISSUE: when I run openFAST, I encounter a fatal error of the “tower strike” type.
looking at different signal, I’ve noticed that the RotSpeed one becomes unstable, with large negative/positive rotor speed, clearly non physical, see figure.
I have the strong sensation that I did something wrong with the controller - and apologies for the basic question - but I’ve tried multiple things and they do not work.
Thanks a lot
Maurizio
Hi Maurizio,
This doesn’t look like controller instability to me. These non-physical instabilities usually stem from the aerodynamics or elastic solver. Have you changed any AeroDyn, ElastoDyn, or solver settings in the OpenFAST model?
Is this the floating IEA model? We can look, but we haven’t seen this behavior in that model recently.
Best, Dan
Many thanks @Daniel.Zalkind.
-
So, I suppose the process I followed to use the ROSCO controller is correct, right? I.e. downloading the libdiscon.dll library from the ROSCO repository, put it into a folder reacheable by OpenFAST, and update the servodyn settings to point to that controller?
-
Sorry I realised I did not mention it, but YES, this is the IEA 15MW Umaine semisub wind turbine (floating), v1.14.
Fst is this one:
`------- OpenFAST INPUT FILE -------------------------------------------
IEA 15 MW offshore reference model on UMaine VolturnUS-S semi-submersible floating platform
---------------------- SIMULATION CONTROL --------------------------------------
False Echo - Echo input data to .ech (flag)
“FATAL” AbortLevel - Error level when simulation should abort (string) {“WARNING”, “SEVERE”, “FATAL”}
3600.0 TMax - Total run time (s)
0.025 DT - Integration time step (s)
2 InterpOrder - Interpolation order for input/output time history (-) {1=linear, 2=quadratic}
0 NumCrctn - Number of correction iterations (-) {0=explicit calculation, i.e., no corrections}
99999.0 DT_UJac - Time between calls to get Jacobians (s)
1000000.0 UJacSclFact - Scaling factor used in Jacobians (-)
---------------------- FEATURE SWITCHES AND FLAGS ------------------------------
1 CompElast - Compute structural dynamics (switch) {1=ElastoDyn; 2=ElastoDyn + BeamDyn for blades}
1 CompInflow - Compute inflow wind velocities (switch) {0=still air; 1=InflowWind; 2=external from OpenFOAM}
2 CompAero - Compute aerodynamic loads (switch) {0=None; 1=AeroDyn v14; 2=AeroDyn v15}
1 CompServo - Compute control and electrical-drive dynamics (switch) {0=None; 1=ServoDyn}
1 CompHydro - Compute hydrodynamic loads (switch) {0=None; 1=HydroDyn}
0 CompSub - Compute sub-structural dynamics (switch) {0=None; 1=SubDyn; 2=External Platform MCKF}
3 CompMooring - Compute mooring system (switch) {0=None; 1=MAP++; 2=FEAMooring; 3=MoorDyn; 4=OrcaFlex}
0 CompIce - Compute ice loads (switch) {0=None; 1=IceFloe; 2=IceDyn}
0 MHK - MHK turbine type (switch) {0=Not an MHK turbine; 1=Fixed MHK turbine; 2=Floating MHK turbine}
---------------------- ENVIRONMENTAL CONDITIONS --------------------------------
9.81 Gravity - Gravitational acceleration (m/s^2)
1.225 AirDens - Air density (kg/m^3)
1025 WtrDens - Water density (kg/m^3)
1.464e-05 KinVisc - Kinematic viscosity of working fluid (m^2/s)
335 SpdSound - Speed of sound in working fluid (m/s)
103500 Patm - Atmospheric pressure ¶ [used only for an MHK turbine cavitation check]
1700 Pvap - Vapour pressure of working fluid ¶ [used only for an MHK turbine cavitation check]
200 WtrDpth - Water depth (m)
0 MSL2SWL - Offset between still-water level and mean sea level (m) [positive upward]
---------------------- INPUT FILES ---------------------------------------------
“IEA-15-240-RWT-UMaineSemi_ElastoDyn.dat” EDFile - Name of file containing ElastoDyn input parameters (quoted string)
“” BDBldFile(1) - Name of file containing BeamDyn input parameters for blade 1 (quoted string)
“” BDBldFile(2) - Name of file containing BeamDyn input parameters for blade 2 (quoted string)
“” BDBldFile(3) - Name of file containing BeamDyn input parameters for blade 3 (quoted string)
“…/IEA-15-240-RWT/IEA-15-240-RWT_InflowFile.dat” InflowFile - Name of file containing inflow wind input parameters (quoted string)
“IEA-15-240-RWT-UMaineSemi_AeroDyn15.dat” AeroFile - Name of file containing aerodynamic input parameters (quoted string)
“IEA-15-240-RWT-UMaineSemi_ServoDyn.dat” ServoFile - Name of file containing control and electrical-drive input parameters (quoted string)
“IEA-15-240-RWT-UMaineSemi_HydroDyn.dat” HydroFile - Name of file containing hydrodynamic input parameters (quoted string)
“none” SubFile - Name of file containing sub-structural input parameters (quoted string)
“IEA-15-240-RWT-UMaineSemi_MoorDyn.dat” MooringFile - Name of file containing mooring system input parameters (quoted string)
“none” IceFile - Name of file containing ice input parameters (quoted string)
---------------------- OUTPUT --------------------------------------------------
False SumPrint - Print summary data to “.sum” (flag)
10.0 SttsTime - Amount of time between screen status messages (s)
99999.0 ChkptTime - Amount of time between creating checkpoint files for potential restart (s)
default DT_Out - Time step for tabular output (s) (or “default”)
0.000000 TStart - Time to begin tabular output (s)
3 OutFileFmt - Format for tabular (time-marching) output file (switch) {1: text file [.out], 2: binary file [.outb], 3: both}
True TabDelim - Use tab delimiters in text tabular output file? (flag) {uses spaces if false}
“ES10.3E2” OutFmt - Format used for text tabular output, excluding the time channel. Resulting field should be 10 characters. (quoted string)
---------------------- LINEARIZATION -------------------------------------------
False Linearize - Linearization analysis (flag)
False CalcSteady - Calculate a steady-state periodic operating point before linearization? [unused if Linearize=False] (flag)
3 TrimCase - Controller parameter to be trimmed {1:yaw; 2:torque; 3:pitch} [used only if CalcSteady=True] (-)
0.001 TrimTol - Tolerance for the rotational speed convergence [used only if CalcSteady=True] (-)
0.01 TrimGain - Proportional gain for the rotational speed error (>0) [used only if CalcSteady=True] (rad/(rad/s) for yaw or pitch; Nm/(rad/s) for torque)
0 Twr_Kdmp - Damping factor for the tower [used only if CalcSteady=True] (N/(m/s))
0 Bld_Kdmp - Damping factor for the blades [used only if CalcSteady=True] (N/(m/s))
2 NLinTimes - Number of times to linearize (-) [>=1] [unused if Linearize=False]
30.000000, 60.000000 LinTimes - List of times at which to linearize (s) [1 to NLinTimes] [used only when Linearize=True and CalcSteady=False]
1 LinInputs - Inputs included in linearization (switch) {0=none; 1=standard; 2=all module inputs (debug)} [unused if Linearize=False]
1 LinOutputs - Outputs included in linearization (switch) {0=none; 1=from OutList(s); 2=all module outputs (debug)} [unused if Linearize=False]
False LinOutJac - Include full Jacobians in linearization output (for debug) (flag) [unused if Linearize=False; used only if LinInputs=LinOutputs=2]
False LinOutMod - Write module-level linearization output files in addition to output for full system? (flag) [unused if Linearize=False]
---------------------- VISUALIZATION ------------------------------------------
0 WrVTK - VTK visualization data output: (switch) {0=none; 1=initialization data only; 2=animation}
2 VTK_type - Type of VTK visualization data: (switch) {1=surfaces; 2=basic meshes (lines/points); 3=all meshes (debug)} [unused if WrVTK=0]
False VTK_fields - Write mesh fields to VTK data files? (flag) {true/false} [unused if WrVTK=0]
15.0 VTK_fps - Frame rate for VTK output (frames per second){will use closest integer multiple of DT} [used only if WrVTK=2]
I will put Aerodyn and Elastodyn in anothe answer due to the character limits
Then the IEA-15-240-RWT-UMaineSemi_AeroDyn15.dat is this one:
------- AERODYN v15.03.* INPUT FILE ------------------------------------------------
IEA 15 MW Offshore Reference Turbine
====== General Options ============================================================================
False Echo - Echo the input to “.AD.ech”? (flag)
default DTAero - Time interval for aerodynamic calculations {or “default”} (s)
1 WakeMod - Type of wake/induction model (switch) {0=none, 1=BEMT, 2=DBEMT, 3=OLAF} [WakeMod cannot be 2 or 3 when linearizing]
2 AFAeroMod - Type of blade airfoil aerodynamics model (switch) {1=steady model, 2=Beddoes-Leishman unsteady model} [AFAeroMod must be 1 when linearizing]
1 TwrPotent - Type tower influence on wind based on potential flow around the tower (switch) {0=none, 1=baseline potential flow, 2=potential flow with Bak correction}
1 TwrShadow - Calculate tower influence on wind based on downstream tower shadow (switch) {0=none, 1=Powles model, 2=Eames model}
True TwrAero - Calculate tower aerodynamic loads? (flag)
False FrozenWake - Assume frozen wake during linearization? (flag) [used only when WakeMod=1 and when linearizing]
False CavitCheck - Perform cavitation check? (flag) [AFAeroMod must be 1 when CavitCheck=true]
False Buoyancy - Include buoyancy effects? (flag)
False CompAA - Flag to compute AeroAcoustics calculation [only used when WakeMod=1 or 2]
AeroAcousticsInput.dat AA_InputFile - AeroAcoustics input file [used only when CompAA=true]
====== Environmental Conditions ===================================================================
“default” AirDens - Air density (kg/m^3)
“default” KinVisc - Kinematic air viscosity (m^2/s)
“default” SpdSound - Speed of sound (m/s)
“default” Patm - Atmospheric pressure ¶ [used only when CavitCheck=True]
“default” Pvap - Vapour pressure of fluid ¶ [used only when CavitCheck=True]
====== Blade-Element/Momentum Theory Options ====================================================== [used only when WakeMod=1]
2 SkewMod - Type of skewed-wake correction model (switch) {1=uncoupled, 2=Pitt/Peters, 3=coupled} [unused when WakeMod=0 or 3]
default SkewModFactor - Constant used in Pitt/Peters skewed wake model {or “default” is 15/32*pi} (-) [used only when SkewMod=2; unused when WakeMod=0 or 3]
True TipLoss - Use the Prandtl tip-loss model? (flag) [unused when WakeMod=0 or 3]
True HubLoss - Use the Prandtl hub-loss model? (flag) [unused when WakeMod=0 or 3]
True TanInd - Include tangential induction in BEMT calculations? (flag) [unused when WakeMod=0 or 3]
True AIDrag - Include the drag term in the axial-induction calculation? (flag) [unused when WakeMod=0 or 3]
True TIDrag - Include the drag term in the tangential-induction calculation? (flag) [unused when WakeMod=0,3 or TanInd=FALSE]
default IndToler - Convergence tolerance for BEMT nonlinear solve residual equation {or “default”} (-) [unused when WakeMod=0 or 3]
500 MaxIter - Maximum number of iteration steps (-) [unused when WakeMod=0]
====== Dynamic Blade-Element/Momentum Theory Options ====================================================== [used only when WakeMod=1]
2 DBEMT_Mod - Type of dynamic BEMT (DBEMT) model {1=constant tau1, 2=time-dependent tau1} (-) [used only when WakeMod=2]
29.03 tau1_const - Time constant for DBEMT (s) [used only when WakeMod=2 and DBEMT_Mod=1]
====== OLAF – cOnvecting LAgrangian Filaments (Free Vortex Wake) Theory Options ================== [used only when WakeMod=3]
…/IEA-15-240-RWT-OLAF/IEA-15-240-RWT_OLAF.dat OLAFInputFileName - Input file for OLAF [used only when WakeMod=3]
====== Beddoes-Leishman Unsteady Airfoil Aerodynamics Options ===================================== [used only when AFAeroMod=2]
3 UAMod - Unsteady Aero Model Switch (switch) {1=Baseline model (Original), 2=Gonzalez’s variant (changes in Cn,Cc,Cm), 3=Minnema/Pierce variant (changes in Cc and Cm)} [used only when AFAeroMod=2]
True FLookup - Flag to indicate whether a lookup for f’ will be calculated (TRUE) or whether best-fit exponential equations will be used (FALSE); if FALSE S1-S4 must be provided in airfoil input files (flag) [used only when AFAeroMod=2]
====== Airfoil Information =========================================================================
1 AFTabMod - Interpolation method for multiple airfoil tables {1=1D interpolation on AoA (first table only); 2=2D interpolation on AoA and Re; 3=2D interpolation on AoA and UserProp} (-)
1 InCol_Alfa - The column in the airfoil tables that contains the angle of attack (-)
2 InCol_Cl - The column in the airfoil tables that contains the lift coefficient (-)
3 InCol_Cd - The column in the airfoil tables that contains the drag coefficient (-)
4 InCol_Cm - The column in the airfoil tables that contains the pitching-moment coefficient; use zero if there is no Cm column (-)
0 InCol_Cpmin - The column in the airfoil tables that contains the Cpmin coefficient; use zero if there is no Cpmin column (-)
50 NumAFfiles - Number of airfoil files used (-)
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_00.dat” AFNames - Airfoil file names (NumAFfiles lines) (quoted strings)
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_01.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_02.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_03.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_04.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_05.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_06.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_07.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_08.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_09.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_10.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_11.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_12.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_13.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_14.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_15.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_16.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_17.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_18.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_19.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_20.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_21.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_22.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_23.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_24.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_25.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_26.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_27.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_28.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_29.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_30.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_31.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_32.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_33.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_34.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_35.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_36.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_37.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_38.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_39.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_40.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_41.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_42.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_43.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_44.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_45.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_46.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_47.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_48.dat”
“…/IEA-15-240-RWT/Airfoils/IEA-15-240-RWT_AeroDyn15_Polar_49.dat”
====== Rotor/Blade Properties =====================================================================
True UseBlCm - Include aerodynamic pitching moment in calculations? (flag)
“…/IEA-15-240-RWT/IEA-15-240-RWT_AeroDyn15_blade.dat” ADBlFile(1) - Name of file containing distributed aerodynamic properties for Blade #1 (-)
“…/IEA-15-240-RWT/IEA-15-240-RWT_AeroDyn15_blade.dat” ADBlFile(2) - Name of file containing distributed aerodynamic properties for Blade #2 (-) [unused if NumBl < 2]
“…/IEA-15-240-RWT/IEA-15-240-RWT_AeroDyn15_blade.dat” ADBlFile(3) - Name of file containing distributed aerodynamic properties for Blade #3 (-) [unused if NumBl < 3]
====== Hub Properties ============================================================================== [used only when Buoyancy=True]
0.0 VolHub - Hub volume (m^3)
0.0 HubCenBx - Hub center of buoyancy x direction offset (m)
====== Nacelle Properties ========================================================================== [used only when Buoyancy=True]
0.0 VolNac - Nacelle volume (m^3)
0,0,0 NacCenB - Position of nacelle center of buoyancy from yaw bearing in nacelle coordinates (m)
====== Tail fin Aerodynamics ========================================================================
False TFinAero - Calculate tail fin aerodynamics model (flag)
“unused” TFinFile - Input file for tail fin aerodynamics [used only when TFinAero=True]
====== Tower Influence and Aerodynamics ============================================================= [used only when TwrPotent/=0, TwrShadow/=0, or TwrAero=True]
11 NumTwrNds - Number of tower nodes used in the analysis (-) [used only when TwrPotent/=0, TwrShadow/=0, or TwrAero=True]
TwrElev TwrDiam TwrCd TwrTI TwrCb !TwrTI used only with TwrShadow=2, TwrCb used only with Buoyancy=True
(m) (m) (-) (-) (-)
15. 10. 0.5 0.1 0.0
28. 10. 0.5 0.1 0.0
41. 10. 0.5 0.1 0.0
54. 10. 0.5 0.1 0.0
67. 10. 0.5 0.1 0.0
80. 10. 0.5 0.1 0.0
93. 10. 0.5 0.1 0.0
106. 10. 0.5 0.1 0.0
119. 10. 0.5 0.1 0.0
132. 10. 0.5 0.1 0.0
144.386 6.5 0.5 0.1 0.0
====== Outputs ====================================================================================
False SumPrint - Generate a summary file listing input options and interpolated properties to “.AD.sum”? (flag)
9 NBlOuts - Number of blade node outputs [0 - 9] (-)
6, 11, 16, 21, 25, 30, 35, 40, 45 BlOutNd - Blade nodes whose values will be output (-)
0 NTwOuts - Number of tower node outputs [0 - 9] (-)
0 TwOutNd - Tower nodes whose values will be output (-)
OutList - The next line(s) contains a list of output parameters. See OutListParameters.xlsx for a listing of available output channels, (-)
“RtFldFxh”
“RtFldFyh”
“RtFldFzh”
“RtFldMxh”
“RtFldMyh”
“RtFldMzh”
“RtVAvgxh”
“RtFldCp”
“RtFldCt”
“RtArea”
“RtSpeed”
“RtTSR”
END of input file (the word “END” must appear in the first 3 columns of this last OutList line)
====== Outputs for all blade stations (same ending as above for B1N1… =========================== [optional section]
1 BldNd_BladesOut - Number of blades to output all node information at. Up to number of blades on turbine. (-)
“All” BldNd_BlOutNd - Future feature will allow selecting a portion of the nodes to output. Not implemented yet. (-)
OutList - The next line(s) contains a list of output parameters. See OutListParameters.xlsx for a listing of available output channels, (-)
Vrel
Alpha
Vindx
Vindy
Cn
Ct
Fn
Ft
Fx
Fy
TnInd
AxInd
END (the word “END” must appear in the first 3 columns of this last OutList line in the optional nodal output section)
And IEA-15-240-RWT-UMaineSemi_ElastoDyn.dat like this one:
------- ELASTODYN v1.03.* INPUT FILE -------------------------------------------
IEA 15 MW offshore reference model on UMaine VolturnUS-S semi-submersible floating platform
---------------------- SIMULATION CONTROL --------------------------------------
False Echo - Echo input data to “.ech” (flag)
3 Method - Integration method: {1: RK4, 2: AB4, or 3: ABM4} (-)
“default” DT Integration time step (s)
---------------------- DEGREES OF FREEDOM --------------------------------------
True FlapDOF1 - First flapwise blade mode DOF (flag)
True FlapDOF2 - Second flapwise blade mode DOF (flag)
True EdgeDOF - First edgewise blade mode DOF (flag)
False TeetDOF - Rotor-teeter DOF (flag) [unused for 3 blades]
False DrTrDOF - Drivetrain rotational-flexibility DOF (flag)
True GenDOF - Generator DOF (flag)
False YawDOF - Yaw DOF (flag)
True TwFADOF1 - First fore-aft tower bending-mode DOF (flag)
True TwFADOF2 - Second fore-aft tower bending-mode DOF (flag)
True TwSSDOF1 - First side-to-side tower bending-mode DOF (flag)
True TwSSDOF2 - Second side-to-side tower bending-mode DOF (flag)
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 --------------------------------------
0 OoPDefl - Initial out-of-plane blade-tip displacement (meters)
0 IPDefl - Initial in-plane blade-tip deflection (meters)
1. BlPitch(1) - Blade 1 initial pitch (degrees)
1. BlPitch(2) - Blade 2 initial pitch (degrees)
1. BlPitch(3) - Blade 3 initial pitch (degrees) [unused for 2 blades]
0 TeetDefl - Initial or fixed teeter angle (degrees) [unused for 3 blades]
0 Azimuth - Initial azimuth angle for blade 1 (degrees)
7.55 RotSpeed - Initial or fixed rotor speed (rpm)
0 NacYaw - Initial or fixed nacelle-yaw angle (degrees)
0 TTDspFA - Initial fore-aft tower-top displacement (meters)
0 TTDspSS - Initial side-to-side tower-top displacement (meters)
0 PtfmSurge - Initial or fixed horizontal surge translational displacement of platform (meters)
0 PtfmSway - Initial or fixed horizontal sway translational displacement of platform (meters)
0 PtfmHeave - Initial or fixed vertical heave translational displacement of platform (meters)
0 PtfmRoll - Initial or fixed roll tilt rotational displacement of platform (degrees)
0 PtfmPitch - Initial or fixed pitch tilt rotational displacement of platform (degrees)
0 PtfmYaw - Initial or fixed yaw rotational displacement of platform (degrees)
---------------------- TURBINE CONFIGURATION -----------------------------------
3 NumBl - Number of blades (-)
120.97 TipRad - The distance from the rotor apex to the blade tip (meters)
3.97 HubRad - The distance from the rotor apex to the blade root (meters)
-4 PreCone(1) - Blade 1 cone angle (degrees)
-4 PreCone(2) - Blade 2 cone angle (degrees)
-4 PreCone(3) - Blade 3 cone angle (degrees) [unused for 2 blades]
0 HubCM - Distance from rotor apex to hub mass [positive downwind] (meters)
0 UndSling - Undersling length [distance from teeter pin to the rotor apex] (meters) [unused for 3 blades]
0 Delta3 - Delta-3 angle for teetering rotors (degrees) [unused for 3 blades]
0 AzimB1Up - Azimuth value to use for I/O when blade 1 points up (degrees)
-12.098 OverHang - Distance from yaw axis to rotor apex [3 blades] or teeter pin [2 blades] (meters)
0.0 ShftGagL - Distance from rotor apex [3 blades] or teeter pin [2 blades] to shaft strain gages [positive for upwind rotors] (meters)
-6.0 ShftTilt - Rotor shaft tilt angle (degrees)
-4.7201 NacCMxn - Downwind distance from the tower-top to the nacelle CM (meters)
0.0 NacCMyn - Lateral distance from the tower-top to the nacelle CM (meters)
4.2751 NacCMzn - Vertical distance from the tower-top to the nacelle CM (meters)
0.0 NcIMUxn - Downwind distance from the tower-top to the nacelle IMU (meters)
0.0 NcIMUyn - Lateral distance from the tower-top to the nacelle IMU (meters)
0.0 NcIMUzn - Vertical distance from the tower-top to the nacelle IMU (meters)
4.3495 Twr2Shft - Vertical distance from the tower-top to the rotor shaft (meters)
144.386 TowerHt - Height of tower above ground level [onshore] or MSL [offshore] (meters)
15 TowerBsHt - Height of tower base above ground level [onshore] or MSL [offshore] (meters)
0 PtfmCMxt - Downwind distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)
0 PtfmCMyt - Lateral distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)
-14.400 PtfmCMzt - Vertical distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)
0 PtfmRefzt - Vertical distance from the ground level [onshore] or MSL [offshore] to the platform reference point (meters)
---------------------- MASS AND INERTIA ----------------------------------------
0 TipMass(1) - Tip-brake mass, blade 1 (kg)
0 TipMass(2) - Tip-brake mass, blade 2 (kg)
0 TipMass(3) - Tip-brake mass, blade 3 (kg) [unused for 2 blades]
69360 HubMass - Hub mass (kg)
973520 HubIner - Hub inertia about rotor axis [3 blades] or teeter axis [2 blades] (kg m^2)
1836784 GenIner - Generator inertia about HSS (kg m^2)
646895 NacMass - Nacelle mass (kg)
24240914 NacYIner - Nacelle inertia about yaw axis (kg m^2)
28280 YawBrMass - Yaw bearing mass (kg)
1.7838E+07 PtfmMass - Platform mass (kg)
1.2507E+10 PtfmRIner - Platform inertia for roll tilt rotation about the platform CM (kg m^2)
1.2507E+10 PtfmPIner - Platform inertia for pitch tilt rotation about the platform CM (kg m^2)
2.3667E+10 PtfmYIner - Platform inertia for yaw rotation about the platform CM (kg m^2)
---------------------- BLADE ---------------------------------------------------
50 BldNodes - Number of blade nodes (per blade) used for analysis (-)
“…/IEA-15-240-RWT/IEA-15-240-RWT_ElastoDyn_blade.dat” BldFile1 - Name of file containing properties for blade 1 (quoted string)
“…/IEA-15-240-RWT/IEA-15-240-RWT_ElastoDyn_blade.dat” BldFile2 - Name of file containing properties for blade 2 (quoted string)
“…/IEA-15-240-RWT/IEA-15-240-RWT_ElastoDyn_blade.dat” BldFile3 - Name of file containing properties for blade 3 (quoted string) [unused for 2 blades]
---------------------- ROTOR-TEETER --------------------------------------------
0 TeetMod - Rotor-teeter spring/damper model {0: none, 1: standard, 2: user-defined from routine UserTeet} (switch) [unused for 3 blades]
0 TeetDmpP - Rotor-teeter damper position (degrees) [used only for 2 blades and when TeetMod=1]
0 TeetDmp - Rotor-teeter damping constant (N-m/(rad/s)) [used only for 2 blades and when TeetMod=1]
0 TeetCDmp - Rotor-teeter rate-independent Coulomb-damping moment (N-m) [used only for 2 blades and when TeetMod=1]
0 TeetSStP - Rotor-teeter soft-stop position (degrees) [used only for 2 blades and when TeetMod=1]
0 TeetHStP - Rotor-teeter hard-stop position (degrees) [used only for 2 blades and when TeetMod=1]
0 TeetSSSp - Rotor-teeter soft-stop linear-spring constant (N-m/rad) [used only for 2 blades and when TeetMod=1]
0 TeetHSSp - Rotor-teeter hard-stop linear-spring constant (N-m/rad) [used only for 2 blades and when TeetMod=1]
---------------------- DRIVETRAIN ----------------------------------------------
100 GBoxEff - Gearbox efficiency (%)
1 GBRatio - Gearbox ratio (-)
51140939610 DTTorSpr - Drivetrain torsional spring (N-m/rad)
42676833 DTTorDmp - Drivetrain torsional damper (N-m/(rad/s))
---------------------- FURLING -------------------------------------------------
False Furling - Read in additional model properties for furling turbine (flag) [must currently be FALSE)
“unused” FurlFile - Name of file containing furling properties (quoted string) [unused when Furling=False]
---------------------- TOWER ---------------------------------------------------
20 TwrNodes - Number of tower nodes used for analysis (-)
“IEA-15-240-RWT-UMaineSemi_ElastoDyn_tower.dat” TwrFile - Name of file containing tower properties (quoted string)
---------------------- OUTPUT --------------------------------------------------
True SumPrint - Print summary data to “.sum” (flag)
1 OutFile - Switch to determine where output will be placed: {1: in module output file only; 2: in glue code output file only; 3: both} (currently unused)
True TabDelim - Use tab delimiters in text tabular output file? (flag) (currently unused)
“ES10.3E2” OutFmt - Format used for text tabular output (except time). Resulting field should be 10 characters. (quoted string) (currently unused)
0 TStart - Time to begin tabular output (s) (currently unused)
1 DecFact - Decimation factor for tabular output {1: output every time step} (-) (currently unused)
1 NTwGages - Number of tower nodes that have strain gages for output [0 to 9] (-)
20 TwrGagNd - List of tower nodes that have strain gages [1 to TwrNodes] (-) [unused if NTwGages=0] TwrGagNd - List of tower nodes that have strain gages [1 to TwrNodes] (-) [unused if NTwGages=0] TwrGagNd - List of tower nodes that have strain gages [1 to TwrNodes] (-) [unused if NTwGages=0]
3 NBlGages - Number of blade nodes that have strain gages for output [0 to 9] (-)
5, 9, 13 BldGagNd - List of blade nodes that have strain gages [1 to BldNodes] (-) [unused if NBlGages=0] BldGagNd - List of blade nodes that have strain gages [1 to BldNodes] (-) [unused if NBlGages=0] BldGagNd - List of blade nodes that have strain gages [1 to BldNodes] (-) [unused if NBlGages=0]
OutList - The next line(s) contains a list of output parameters. See OutListParameters.xlsx for a listing of available output channels, (-)
“Azimuth”
“BldPitch1”
“BldPitch2”
“BldPitch3”
“GenSpeed”
“IPDefl1”
END of input file (the word “END” must appear in the first 3 columns of this last OutList line)
---------------------- NODE OUTPUTS --------------------------------------------
1 BldNd_BladesOut - Blades to output
99 BldNd_BlOutNd - Blade nodes on each blade (currently unused)
OutList - The next line(s) contains a list of output parameters. See OutListParameters.xlsx, ElastoDyn_Nodes tab for a listing of available output channels, (-)
“TDx” - local flapwise (translational) deflection (relative to the undeflected position) of node
“TDy” - local edgewise (translational) deflection (relative to the undeflected position) of node
“RDz”
END of input file (the word “END” must appear in the first 3 columns of this last OutList line)
I posted this issue in the IEA github forum here