Simulation Time

[bcrealey97]

Hi, I am trying to run 5MW OC3 Spar with my own input data. I have changed the run time within the FST file from 60s to 900s, and I am getting this error message. Any help would be greatly appreciated:

**PS C:\Users\creal\Desktop\openFAST_Binarires\r-test-78d763effae41fb41ecff5143f0b486a6ac0593c\glue-codes\openfast\5MW_OC3Spar_DLL_WTurb_WavesIrr> C:\Users\creal\Desktop\openFAST_Binarires\openfast_x64.exe 5MW_OC3Spar_DLL_WTurb_WavesIrr.fst

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OpenFAST

Copyright (C) 2021 National Renewable Energy Laboratory
Copyright (C) 2021 Envision Energy USA LTD

This program is licensed under Apache License Version 2.0 and comes with ABSOLUTELY NO WARRANTY.
See the "LICENSE" file distributed with this software for details.

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OpenFAST-v3.0.0
Compile Info:

• Compiler: Intel(R) Fortran Compiler 1900
• Architecture: 64 bit
• Precision: single
• OpenMP: No
• Date: Jun 23 2021
• Time: 21:25:05
  Execution Info:
• Date: 03/23/2022
• Time: 15:33:25-0000

OpenFAST input file heading:
FAST Certification Test #24: NREL 5.0 MW Baseline Wind Turbine with OC3 Hywind Configuration,
for use in offshore analysis

Running ElastoDyn.
Nodal outputs section of ElastoDyn input file not found or improperly formatted.
Running AeroDyn.
AD15 Nodal Outputs: Nodal output section of AeroDyn input file not found or improperly formatted.
Skipping nodal outputs.
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 1, blade 1)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 2, blade 1)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 3, blade 1)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 4, blade 1)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 1, blade 2)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 2, blade 2)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 3, blade 2)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 4, blade 2)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 1, blade 3)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 2, blade 3)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 3, blade 3)
Warning: Turning off Unsteady Aerodynamics because C_nalpha is 0. (node 4, blade 3)
Running InflowWind.

Reading a 31x31 grid (145 m wide, 17.5 m to 162.5 m above ground) with a characteristic wind
speed of 12 m/s. This full-field file was generated by TurbSim (v1.06.00, 21-Sep-2012) on
07-Jan-2014 at 12:50:45.

Processed 1442 time steps of 20-Hz full-field data (72.05 seconds).
Running ServoDyn.
Running ServoDyn Interface for Bladed Controllers (using Intel Visual Fortran for Windows, ).
Using legacy Bladed DLL interface.
Running HydroDyn.
Generating incident wave kinematics and current time history.
Reading in WAMIT output with root name ".../5MW_Baseline/HydroData/Spar".
Computing radiation impulse response functions and wave diffraction forces.

MAP++ environment properties (set externally)...
Gravity constant [m/s^2] : 9.81
Sea density [kg/m^3] : 1025.00
Water depth [m] : 320.00
Vessel reference position [m] : 0.00 , 0.00 , 0.00

Time: 0 of 900 seconds.

FAST_Solution0:CalcOutputs_And_SolveForInputs:SolveOption2:SrvD_CalcOutput:DLL_controller_call:Run
ning with torque and pitch control of the NREL offshore 5MW baseline wind turbine from DISCON.dll
as written by J. Jonkman of NREL/NWTC for use in the IEA Annex XXIII OC3 studies. Includes
modifications for the Hywind spar.
Time: 65 of 900 seconds. Estimated final completion at 15:37:21.

FAST_Solution:FAST_AdvanceStates:SolveOption2c_Inp2AD_SrvD:InflowWind_CalcOutput:CalcOutput:IfW_FF
Wind_CalcOutput [position=(-5, 0, 90) in wind-file coordinates]: Error: FF wind array was
exhausted at 65.65 seconds (trying to access data at 72.108 seconds).

OpenFAST encountered an error at simulation time 65.638 of 900 seconds.
Simulation error level: FATAL ERROR

Aborting OpenFAST.

PS C:\Users\creal\Desktop\openFAST_Binarires\r-test-78d763effae41fb41ecff5143f0b486a6ac0593c\glue-codes\openfast\5MW_OC3Spar_DLL_WTurb_WavesIrr>**

[jjonkman]

Dear @bcrealey97,

Similar questions have been asked and answered before, e.g., see: #832.

Best regards,