4.15.2. Input and Output Files
4.15.2.1. Units
SED uses the SI system (kg, m, s, N).
4.15.2.2. Input file
------- SIMPLIFIED ELASTODYN INPUT FILE ----------------------------------------
Comment
---------------------- SIMULATION CONTROL --------------------------------------
False Echo - Echo input data to "<RootName>.ech" (flag)
3 Method - Integration method: {1: RK4, 2: AB4, or 3: ABM4} (-)
"default" DT - Integration time step (s)
---------------------- DEGREES OF FREEDOM --------------------------------------
True GenDOF - Generator DOF (flag)
---------------------- INITIAL CONDITIONS --------------------------------------
0 Azimuth - Initial azimuth angle for blades (degrees)
0 BlPitch - Blades initial pitch (degrees)
0.0 RotSpeed - Initial or fixed rotor speed (rpm)
0 NacYaw - Initial or fixed nacelle-yaw angle (degrees)
0 PtfmPitch - Fixed pitch tilt rotational displacement of platform (degrees)
---------------------- TURBINE CONFIGURATION -----------------------------------
3 NumBl - Number of blades (-)
63 TipRad - The distance from the rotor apex to the blade tip (meters)
1.5 HubRad - The distance from the rotor apex to the blade root (meters)
-2.5 PreCone - Blades cone angle (degrees)
-5.0191 OverHang - Distance from yaw axis to rotor apex [3 blades] or teeter pin [2 blades] (meters)
-5 ShftTilt - Rotor shaft tilt angle (degrees)
1.96256 Twr2Shft - Vertical distance from the tower-top to the rotor shaft (meters)
87.6 TowerHt - Height of tower above ground level [onshore] or MSL [offshore] (meters)
---------------------- MASS AND INERTIA ----------------------------------------
115926 RotIner - Rot inertia about rotor axis [blades + hub] (kg m^2)
534.116 GenIner - Generator inertia about HSS (kg m^2)
---------------------- DRIVETRAIN ----------------------------------------------
100 GBoxEff - Gearbox efficiency (%)
97 GBRatio - Gearbox ratio (-)
---------------------- OUTPUT --------------------------------------------------
OutList - The next line(s) contains a list of output parameters. See OutListParameters.xlsx for a listing of available output channels, (-)
"Azimuth" - Blades azimuth angle
"RotSpeed" - Low-speed shaft rotational speed
"RotAcc" - Low-speed shaft rotational acceleration
END of input file (the word "END" must appear in the first 3 columns of this last OutList line)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
4.15.2.3. Outputs
- The write outputs are:
“Azimuth” : Blades azimuth angle (deg) between 0 and 2pi
“RotSpeed”: Low-speed shaft rotational speed (rpm)
“RotAcc”: Low-speed shaft rotational acceleration (rad/s^2)
“GenSpeed”: High-speed shaft rotational speed (rpm)
“GenAcc”: High-speed shaft rotational acceleration (rad/s^2)