# Something wrong about OPENFAST output **URL:** \ **Category:** Wind & Water\ **Created:** [December 4, 2023, 8:38am UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129 "2023-12-04T08:38:57Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Xiang.Wang](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/xiang.wang/32/6604_2.png) [@Xiang.Wang](https://forums.nlr.gov/u/Xiang.Wang)\ **Post date:** [December 4, 2023, 8:38am UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/1 "2023-12-04T08:38:57Z")
Hi Jonkman I am currently running the IEA 15MW reference wind turbine (RWT) with a semi-submersible floating platform，my OPENFAST terminated normally and also outputted some results, but I found that the value of some parameters related to twist,for example,TwstDefl1,TwstDefl2,TwstDefl3,TTDspTwst have been constantly 0. I have already turn on all the parameters related to degrees of freedom except TeetDOF in ElastoDyn, so I’m curious why the values of the above parameters have always been 0, and which parts of my settings may still have problems? and below is my OPENFAST running process. OpenFAST Copyright (C) 2023 National Renewable Energy Laboratory Copyright (C) 2023 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. * * * OpenFAST-Unversioned from 18704086dad861ab13daf804825da7c4b8d59428 Compile Info: - Compiler: Intel(R) Fortran Compiler 2021 - Architecture: 64 bit - Precision: single - OpenMP: No - Date: Feb 18 2023 - Time: 12:16:53 Execution Info: - Date: 12/01/2023 - Time: 09:43:12+0800 OpenFAST input file heading: IEA 15 MW offshore reference model on UMaine VolturnUS-S semi-submersible floating platform 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 polar has constant data. (node 1, blade 1) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 2, blade 1) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 1, blade 2) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 2, blade 2) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 1, blade 3) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 2, blade 3) Running InflowWind. Reading a 62x62 grid (260 m wide, 20 m to 280 m above ground) with a characteristic wind speed of 12 m/s. This full-field file was generated by TurbSim (from OpenFAST-v3.4.1) on 29-Nov-2023 at 10:32:12. Processed 20534 time steps of 20-Hz full-field data (1026.7 seconds). Running HydroDyn. Setting WaveTMax to 0.0 since WaveMod = 0 WARNING: The requested output channel is invalid: WavesF1xi WARNING: The requested output channel is invalid: WavesF1zi WARNING: The requested output channel is invalid: WavesM1yi WARNING: The requested output channel is invalid: WavesF2xi WARNING: The requested output channel is invalid: WavesF2zi WARNING: The requested output channel is invalid: WavesM2yi WARNING: The requested output channel is invalid: WavesF2xi WARNING: The requested output channel is invalid: WavesF2yi WARNING: The requested output channel is invalid: WavesF2zi WARNING: The requested output channel is invalid: WavesM2xi WARNING: The requested output channel is invalid: WavesM2yi WARNING: The requested output channel is invalid: WavesM2zi Calculating second order difference frequency wave kinematics. Reading in WAMIT output with root name “.\HydroData/IEA-15-240-RWT-UMaineSemi”. Computing radiation impulse response functions and wave diffraction forces. Calculating second order difference-frequency force using the full quadratic transfer function. Running MoorDyn (v2.0.0, 2022-12-08). This is MoorDyn v2, with significant input file changes from v1. Copyright: (C) 2022 National Renewable Energy Laboratory, (C) 2019 Matt Hall Parsing MoorDyn input file: .\IEA-15-240-RWT-UMaineSemi\_MoorDyn.dat Warning: invalid output specifier FX. Must start with L, C, R, or B Warning: invalid output specifier FY. Must start with L, C, R, or B Warning: invalid output specifier FZ. Must start with L, C, R, or B Created mooring system: 3 lines, 6 points, 0 rods, 0 bodies. Finalizing initial conditions using dynamic relaxation. t=60 FairTen 1: 2.42597E+06, 2.45002E+06, 2.43250E+06 Fairlead tensions did not converge within TMaxIC=60 seconds. MoorDyn initialization completed. Running ServoDyn. Running ServoDyn Interface for Bladed Controllers (using Intel Visual Fortran for Windows). Using legacy Bladed DLL interface. FAST\_InitializeAll:HydroDyn\_Init:HydroDynInput\_ProcessInitData: A requested output channel is invalid * * * ## Running ROSCO-v2.8.0 A wind turbine controller framework for public use in the scientific field Developed in collaboration: National Renewable Energy Laboratory Delft University of Technology, The Netherlands Generator speed: 7.6 RPM, Pitch angle: -1.0 deg, Power: 0.0 kW, Est. wind Speed: 12.5 m/s FAST\_Solution:CalcOutputs\_And\_SolveForInputs:SolveOption2:AD\_CalcOutput:RotCalcOutput:BEMT\_CalcOut put(node 3, blade 1):UA\_CalcOutput:UA\_BlendSteady:Temporarily turning off UA due to high angle of attack or low relative velocity. This warning will not be repeated though the condition may persist. FAST\_Solution:CalcOutputs\_And\_SolveForInputs:SolveOption2:AD\_CalcOutput:RotCalcOutput:BEMT\_CalcOut put(node 50, blade 2):UA\_CalcOutput:Mach number exceeds 0.3. Theory is invalid. This warning will not be repeated though the condition may persist. Generator speed: 6.5 RPM, Pitch angle: 6.7 deg, Power: 11715.8 kW, Est. wind Speed: 9.9 m/s Generator speed: 7.5 RPM, Pitch angle: 4.4 deg, Power: 14676.6 kW, Est. wind Speed: 12.5 m/s Generator speed: 7.6 RPM, Pitch angle: 6.3 deg, Power: 14738.2 kW, Est. wind Speed: 11.2 m/s Generator speed: 7.7 RPM, Pitch angle: 6.7 deg, Power: 15465.9 kW, Est. wind Speed: 12.6 m/s Generator speed: 8.0 RPM, Pitch angle: 8.2 deg, Power: 15849.4 kW, Est. wind Speed: 13.3 m/s Generator speed: 7.7 RPM, Pitch angle: 9.3 deg, Power: 14964.0 kW, Est. wind Speed: 13.0 m/s Generator speed: 7.4 RPM, Pitch angle: 9.3 deg, Power: 14856.7 kW, Est. wind Speed: 13.5 m/s Generator speed: 7.8 RPM, Pitch angle: 10.4 deg, Power: 15452.6 kW, Est. wind Speed: 14.5 m/s Generator speed: 7.6 RPM, Pitch angle: 10.0 deg, Power: 14927.4 kW, Est. wind Speed: 13.7 m/s Generator speed: 7.0 RPM, Pitch angle: 7.9 deg, Power: 13913.3 kW, Est. wind Speed: 12.4 m/s Generator speed: 7.3 RPM, Pitch angle: 6.6 deg, Power: 14348.8 kW, Est. wind Speed: 12.0 m/s Generator speed: 7.4 RPM, Pitch angle: 4.1 deg, Power: 13714.1 kW, Est. wind Speed: 11.2 m/s Generator speed: 7.5 RPM, Pitch angle: 4.2 deg, Power: 14330.2 kW, Est. wind Speed: 11.0 m/s Generator speed: 7.8 RPM, Pitch angle: 5.1 deg, Power: 15508.0 kW, Est. wind Speed: 11.8 m/s Generator speed: 7.9 RPM, Pitch angle: 6.6 deg, Power: 15720.6 kW, Est. wind Speed: 12.5 m/s Generator speed: 7.8 RPM, Pitch angle: 8.0 deg, Power: 15318.9 kW, Est. wind Speed: 12.7 m/s Generator speed: 7.4 RPM, Pitch angle: 7.5 deg, Power: 14683.6 kW, Est. wind Speed: 12.3 m/s Generator speed: 7.5 RPM, Pitch angle: 7.3 deg, Power: 14812.5 kW, Est. wind Speed: 12.5 m/s Generator speed: 7.8 RPM, Pitch angle: 8.4 deg, Power: 15528.0 kW, Est. wind Speed: 13.4 m/s Generator speed: 7.9 RPM, Pitch angle: 10.0 deg, Power: 15733.2 kW, Est. wind Speed: 14.2 m/s Generator speed: 7.6 RPM, Pitch angle: 10.0 deg, Power: 14936.8 kW, Est. wind Speed: 13.7 m/s Generator speed: 7.3 RPM, Pitch angle: 9.3 deg, Power: 14462.6 kW, Est. wind Speed: 13.3 m/s Generator speed: 7.2 RPM, Pitch angle: 7.4 deg, Power: 14439.2 kW, Est. wind Speed: 12.6 m/s Generator speed: 7.3 RPM, Pitch angle: 6.4 deg, Power: 14519.9 kW, Est. wind Speed: 11.9 m/s Generator speed: 7.4 RPM, Pitch angle: 5.3 deg, Power: 14747.3 kW, Est. wind Speed: 11.6 m/s Generator speed: 7.6 RPM, Pitch angle: 5.5 deg, Power: 15038.2 kW, Est. wind Speed: 11.8 m/s Generator speed: 7.7 RPM, Pitch angle: 6.5 deg, Power: 15251.2 kW, Est. wind Speed: 12.1 m/s Generator speed: 7.5 RPM, Pitch angle: 5.7 deg, Power: 14866.3 kW, Est. wind Speed: 11.7 m/s Generator speed: 7.5 RPM, Pitch angle: 6.1 deg, Power: 14822.1 kW, Est. wind Speed: 11.9 m/s Generator speed: 7.5 RPM, Pitch angle: 5.2 deg, Power: 14980.6 kW, Est. wind Speed: 11.7 m/s Total Real Time: 18.529 hours Total CPU Time: 6.6003 hours Simulation CPU Time: 6.5977 hours Simulated Time: 8.33333E-02 hours Time Ratio (Sim/CPU): 1.26307E-02 OpenFAST terminated normally. ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [December 4, 2023, 1:29pm UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/2 "2023-12-04T13:29:21Z")
Dear @Xiang.Wang, It looks like you are modeling the structural dynamics of the blades and tower in ElastoDyn, which does not have blade and tower torsion degrees of freedom. So, these twist-related outputs of ElastoDyn will always be zero. Best regards, ---
**Author:** ![Xiang.Wang](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/xiang.wang/32/6604_2.png) [@Xiang.Wang](https://forums.nlr.gov/u/Xiang.Wang)\ **Post date:** [December 6, 2023, 4:32am UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/3 "2023-12-06T04:32:19Z")
Hi, Jonkman Thank you for your reply. I understand the previous question. But due to my lack of proficiency in using OPENFAST, the new issue I am currently facing is that OPENFAST can still run normally, but there are many parameters that do not have valid outputs, parameters related to Root such as RootFxc1, RootMxc1 and some other parameters related to blade root load are all zero, so I am curious about which parts of the incorrect settings caused the above situation. below is my OPENFAST running process. * * * OpenFAST Copyright (C) 2023 National Renewable Energy Laboratory Copyright (C) 2023 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. * * * OpenFAST-Unversioned from 18704086dad861ab13daf804825da7c4b8d59428 Compile Info: - Compiler: Intel(R) Fortran Compiler 2021 - Architecture: 64 bit - Precision: single - OpenMP: No - Date: Feb 18 2023 - Time: 12:16:53 Execution Info: - Date: 12/05/2023 - Time: 16:52:59+0800 OpenFAST input file heading: IEA 15 MW offshore reference model on UMaine VolturnUS-S semi-submersible floating platform Running ElastoDyn. Nodal outputs section of ElastoDyn input file not found or improperly formatted. Running BeamDyn. Nodal outputs section of BeamDyn input file not found or improperly formatted. Running BeamDyn. Nodal outputs section of BeamDyn input file not found or improperly formatted. Running BeamDyn. Nodal outputs section of BeamDyn 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 polar has constant data. (node 1, blade 1) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 2, blade 1) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 1, blade 2) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 2, blade 2) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 1, blade 3) Warning: Turning off Unsteady Aerodynamics because polar has constant data. (node 2, blade 3) Running InflowWind. Reading a 46x46 grid (260 m wide, 20 m to 280 m above ground) with a characteristic wind speed of 10.59 m/s. This full-field file was generated by TurbSim (from OpenFAST-v3.4.1) on 05-Dec-2023 at 16:21:11. Processed 20592 time steps of 20-Hz full-field data (1029.6 seconds). Running HydroDyn. WaveTMax is less then the simulation time. Wave data will repeat every WaveTMax seconds. Generating incident wave kinematics and current time history. Reading in WAMIT output with root name “.\HydroData/IEA-15-240-RWT-UMaineSemi”. Computing radiation impulse response functions and wave diffraction forces. Calculating second order difference-frequency force using the full quadratic transfer function. Running MoorDyn (v2.0.0, 2022-12-08). This is MoorDyn v2, with significant input file changes from v1. Copyright: (C) 2022 National Renewable Energy Laboratory, (C) 2019 Matt Hall Parsing MoorDyn input file: .\IEA-15-240-RWT-UMaineSemi\_MoorDyn.dat Created mooring system: 3 lines, 6 points, 0 rods, 0 bodies. Finalizing initial conditions using dynamic relaxation. t=60 FairTen 1: 2.42597E+06, 2.45002E+06, 2.43250E+06 Fairlead tensions did not converge within TMaxIC=60 seconds. MoorDyn initialization completed. Running ServoDyn. Running ServoDyn Interface for Bladed Controllers (using Intel Visual Fortran for Windows). Using legacy Bladed DLL interface. * * * ## Running ROSCO-v2.8.0 A wind turbine controller framework for public use in the scientific field Developed in collaboration: National Renewable Energy Laboratory Delft University of Technology, The Netherlands Generator speed: 7.6 RPM, Pitch angle: -1.0 deg, Power: 0.0 kW, Est. wind Speed: 12.7 m/s FAST\_Solution:FAST\_AdvanceStates:SrvD\_UpdateStates:DLL\_controller\_call:BladedInterface option was designed for an explicit-loose coupling scheme. Using last calculated values from DLL on all subsequent calls until time is advanced. Warning will not be displayed again. FAST\_Solution:CalcOutputs\_And\_SolveForInputs:SolveOption2:AD\_CalcOutput:RotCalcOutput:BEMT\_CalcOut put(node 3, blade 1):UA\_CalcOutput:UA\_BlendSteady:Temporarily turning off UA due to high angle of attack or low relative velocity. This warning will not be repeated though the condition may persist. Generator speed: 6.1 RPM, Pitch angle: 2.9 deg, Power: 9903.3 kW, Est. wind Speed: 8.4 m/s Generator speed: 6.2 RPM, Pitch angle: 1.2 deg, Power: 9582.8 kW, Est. wind Speed: 10.1 m/s Generator speed: 7.1 RPM, Pitch angle: 1.2 deg, Power: 11146.0 kW, Est. wind Speed: 9.7 m/s Generator speed: 7.2 RPM, Pitch angle: 1.5 deg, Power: 12501.4 kW, Est. wind Speed: 10.1 m/s Generator speed: 7.6 RPM, Pitch angle: 2.4 deg, Power: 13536.8 kW, Est. wind Speed: 10.6 m/s Time: 50 of 1000 seconds. Estimated final completion at 02:51:59. FAST\_Solution:CalcOutputs\_And\_SolveForInputs:SolveOption2:AD\_CalcOutput:RotCalcOutput:BEMT\_CalcOut put(node 50, blade 2):UA\_CalcOutput:Mach number exceeds 0.3. Theory is invalid. This warning will not be repeated though the condition may persist. Generator speed: 7.7 RPM, Pitch angle: 4.7 deg, Power: 15314.1 kW, Est. wind Speed: 11.3 m/s Generator speed: 7.7 RPM, Pitch angle: 5.8 deg, Power: 15321.4 kW, Est. wind Speed: 11.9 m/s Generator speed: 7.6 RPM, Pitch angle: 5.8 deg, Power: 14969.1 kW, Est. wind Speed: 11.7 m/s Generator speed: 7.2 RPM, Pitch angle: 4.1 deg, Power: 13603.6 kW, Est. wind Speed: 10.9 m/s Generator speed: 7.2 RPM, Pitch angle: 3.5 deg, Power: 12646.9 kW, Est. wind Speed: 10.6 m/s Generator speed: 7.4 RPM, Pitch angle: 2.8 deg, Power: 12500.8 kW, Est. wind Speed: 10.2 m/s Generator speed: 6.8 RPM, Pitch angle: 0.5 deg, Power: 11281.5 kW, Est. wind Speed: 9.5 m/s Generator speed: 6.6 RPM, Pitch angle: 0.6 deg, Power: 10779.6 kW, Est. wind Speed: 9.4 m/s Generator speed: 7.0 RPM, Pitch angle: 0.8 deg, Power: 11516.9 kW, Est. wind Speed: 10.1 m/s Generator speed: 7.3 RPM, Pitch angle: 1.4 deg, Power: 12356.7 kW, Est. wind Speed: 10.1 m/s Generator speed: 7.6 RPM, Pitch angle: 2.4 deg, Power: 13631.8 kW, Est. wind Speed: 10.7 m/s Generator speed: 7.6 RPM, Pitch angle: 3.0 deg, Power: 14065.2 kW, Est. wind Speed: 10.6 m/s Generator speed: 7.4 RPM, Pitch angle: 2.5 deg, Power: 13154.0 kW, Est. wind Speed: 10.2 m/s Generator speed: 7.5 RPM, Pitch angle: 3.1 deg, Power: 14222.5 kW, Est. wind Speed: 10.9 m/s Generator speed: 7.8 RPM, Pitch angle: 6.0 deg, Power: 15686.9 kW, Est. wind Speed: 12.1 m/s Generator speed: 7.7 RPM, Pitch angle: 6.2 deg, Power: 15245.6 kW, Est. wind Speed: 11.8 m/s Generator speed: 7.5 RPM, Pitch angle: 6.3 deg, Power: 14893.4 kW, Est. wind Speed: 12.0 m/s Generator speed: 7.4 RPM, Pitch angle: 4.8 deg, Power: 14560.0 kW, Est. wind Speed: 11.5 m/s Generator speed: 7.1 RPM, Pitch angle: 3.2 deg, Power: 11974.4 kW, Est. wind Speed: 10.1 m/s Generator speed: 6.9 RPM, Pitch angle: 1.5 deg, Power: 11473.9 kW, Est. wind Speed: 9.7 m/s Generator speed: 6.8 RPM, Pitch angle: 1.0 deg, Power: 11129.8 kW, Est. wind Speed: 9.6 m/s Generator speed: 6.9 RPM, Pitch angle: 0.5 deg, Power: 11010.3 kW, Est. wind Speed: 9.5 m/s Generator speed: 6.5 RPM, Pitch angle: 0.0 deg, Power: 10161.6 kW, Est. wind Speed: 9.3 m/s Generator speed: 7.0 RPM, Pitch angle: 0.6 deg, Power: 11087.9 kW, Est. wind Speed: 9.8 m/s Generator speed: 6.9 RPM, Pitch angle: 0.6 deg, Power: 11086.6 kW, Est. wind Speed: 9.5 m/s Generator speed: 6.8 RPM, Pitch angle: 0.2 deg, Power: 10617.8 kW, Est. wind Speed: 9.4 m/s Generator speed: 6.7 RPM, Pitch angle: 0.5 deg, Power: 10737.0 kW, Est. wind Speed: 9.5 m/s Generator speed: 6.7 RPM, Pitch angle: 0.2 deg, Power: 10424.1 kW, Est. wind Speed: 9.4 m/s Generator speed: 6.2 RPM, Pitch angle: 0.0 deg, Power: 8772.4 kW, Est. wind Speed: 8.6 m/s Generator speed: 5.6 RPM, Pitch angle: 0.0 deg, Power: 7047.3 kW, Est. wind Speed: 8.2 m/s Generator speed: 5.8 RPM, Pitch angle: 0.4 deg, Power: 7116.2 kW, Est. wind Speed: 8.5 m/s Generator speed: 6.2 RPM, Pitch angle: 0.3 deg, Power: 7986.5 kW, Est. wind Speed: 8.7 m/s Generator speed: 6.5 RPM, Pitch angle: 0.2 deg, Power: 8927.6 kW, Est. wind Speed: 8.9 m/s Generator speed: 6.2 RPM, Pitch angle: 0.0 deg, Power: 8292.8 kW, Est. wind Speed: 8.7 m/s Generator speed: 6.1 RPM, Pitch angle: 0.0 deg, Power: 7821.9 kW, Est. wind Speed: 8.5 m/s Generator speed: 6.1 RPM, Pitch angle: 0.4 deg, Power: 8091.1 kW, Est. wind Speed: 8.7 m/s Generator speed: 6.7 RPM, Pitch angle: 0.2 deg, Power: 9566.5 kW, Est. wind Speed: 9.5 m/s Generator speed: 6.9 RPM, Pitch angle: 0.3 deg, Power: 10723.4 kW, Est. wind Speed: 9.5 m/s Generator speed: 7.2 RPM, Pitch angle: 0.6 deg, Power: 11657.0 kW, Est. wind Speed: 10.0 m/s Generator speed: 7.1 RPM, Pitch angle: 0.8 deg, Power: 11894.9 kW, Est. wind Speed: 9.8 m/s Generator speed: 7.1 RPM, Pitch angle: 0.8 deg, Power: 11980.9 kW, Est. wind Speed: 9.9 m/s Generator speed: 7.5 RPM, Pitch angle: 2.8 deg, Power: 13630.5 kW, Est. wind Speed: 10.6 m/s Generator speed: 7.7 RPM, Pitch angle: 4.5 deg, Power: 15021.7 kW, Est. wind Speed: 11.1 m/s Generator speed: 7.2 RPM, Pitch angle: 2.6 deg, Power: 12149.0 kW, Est. wind Speed: 9.8 m/s Generator speed: 6.7 RPM, Pitch angle: 1.1 deg, Power: 11768.7 kW, Est. wind Speed: 9.8 m/s Generator speed: 7.5 RPM, Pitch angle: 3.4 deg, Power: 13970.4 kW, Est. wind Speed: 11.2 m/s Generator speed: 7.7 RPM, Pitch angle: 4.7 deg, Power: 15359.0 kW, Est. wind Speed: 11.5 m/s Generator speed: 7.4 RPM, Pitch angle: 4.5 deg, Power: 14573.3 kW, Est. wind Speed: 10.8 m/s Generator speed: 7.5 RPM, Pitch angle: 5.4 deg, Power: 14821.7 kW, Est. wind Speed: 11.4 m/s Generator speed: 7.6 RPM, Pitch angle: 4.0 deg, Power: 15202.3 kW, Est. wind Speed: 11.4 m/s Generator speed: 7.2 RPM, Pitch angle: 3.1 deg, Power: 12695.2 kW, Est. wind Speed: 10.3 m/s Generator speed: 7.1 RPM, Pitch angle: 2.3 deg, Power: 12310.9 kW, Est. wind Speed: 10.1 m/s Generator speed: 7.2 RPM, Pitch angle: 2.1 deg, Power: 12406.8 kW, Est. wind Speed: 10.1 m/s Generator speed: 7.4 RPM, Pitch angle: 2.0 deg, Power: 13029.2 kW, Est. wind Speed: 10.4 m/s Generator speed: 7.5 RPM, Pitch angle: 2.5 deg, Power: 13678.6 kW, Est. wind Speed: 10.7 m/s Generator speed: 7.7 RPM, Pitch angle: 4.7 deg, Power: 15036.3 kW, Est. wind Speed: 11.2 m/s Generator speed: 7.4 RPM, Pitch angle: 3.3 deg, Power: 13911.7 kW, Est. wind Speed: 10.6 m/s Generator speed: 7.5 RPM, Pitch angle: 3.5 deg, Power: 14291.4 kW, Est. wind Speed: 10.9 m/s Generator speed: 7.5 RPM, Pitch angle: 3.4 deg, Power: 14492.1 kW, Est. wind Speed: 11.0 m/s Generator speed: 7.3 RPM, Pitch angle: 3.0 deg, Power: 12782.4 kW, Est. wind Speed: 10.2 m/s Generator speed: 7.2 RPM, Pitch angle: 2.2 deg, Power: 12700.4 kW, Est. wind Speed: 10.2 m/s Generator speed: 7.7 RPM, Pitch angle: 4.8 deg, Power: 15624.6 kW, Est. wind Speed: 11.5 m/s Generator speed: 7.9 RPM, Pitch angle: 6.5 deg, Power: 15590.4 kW, Est. wind Speed: 12.2 m/s Generator speed: 7.0 RPM, Pitch angle: 3.4 deg, Power: 11572.5 kW, Est. wind Speed: 9.9 m/s Generator speed: 6.6 RPM, Pitch angle: 1.7 deg, Power: 11312.6 kW, Est. wind Speed: 9.7 m/s Generator speed: 7.2 RPM, Pitch angle: 2.4 deg, Power: 12279.9 kW, Est. wind Speed: 10.6 m/s Generator speed: 7.5 RPM, Pitch angle: 2.3 deg, Power: 12876.5 kW, Est. wind Speed: 10.1 m/s Generator speed: 7.2 RPM, Pitch angle: 1.3 deg, Power: 12409.5 kW, Est. wind Speed: 10.0 m/s Generator speed: 7.1 RPM, Pitch angle: 1.6 deg, Power: 12345.6 kW, Est. wind Speed: 10.1 m/s Generator speed: 7.4 RPM, Pitch angle: 2.2 deg, Power: 12985.2 kW, Est. wind Speed: 10.5 m/s Generator speed: 7.5 RPM, Pitch angle: 2.6 deg, Power: 13140.3 kW, Est. wind Speed: 10.2 m/s Generator speed: 7.1 RPM, Pitch angle: 1.3 deg, Power: 12250.2 kW, Est. wind Speed: 9.9 m/s Generator speed: 7.0 RPM, Pitch angle: 1.5 deg, Power: 12151.1 kW, Est. wind Speed: 10.0 m/s Generator speed: 7.3 RPM, Pitch angle: 2.1 deg, Power: 12712.9 kW, Est. wind Speed: 10.5 m/s Generator speed: 7.7 RPM, Pitch angle: 3.1 deg, Power: 13961.3 kW, Est. wind Speed: 10.6 m/s Generator speed: 7.3 RPM, Pitch angle: 2.3 deg, Power: 12816.8 kW, Est. wind Speed: 10.1 m/s Generator speed: 6.9 RPM, Pitch angle: 0.9 deg, Power: 11689.5 kW, Est. wind Speed: 9.7 m/s Generator speed: 7.0 RPM, Pitch angle: 1.8 deg, Power: 12118.9 kW, Est. wind Speed: 10.0 m/s Generator speed: 7.1 RPM, Pitch angle: 1.7 deg, Power: 11600.3 kW, Est. wind Speed: 9.8 m/s Generator speed: 6.6 RPM, Pitch angle: 0.2 deg, Power: 10295.1 kW, Est. wind Speed: 9.1 m/s Generator speed: 6.3 RPM, Pitch angle: 0.6 deg, Power: 9523.0 kW, Est. wind Speed: 8.9 m/s Generator speed: 6.7 RPM, Pitch angle: 0.0 deg, Power: 10090.0 kW, Est. wind Speed: 9.6 m/s Generator speed: 7.1 RPM, Pitch angle: 0.9 deg, Power: 11520.8 kW, Est. wind Speed: 9.7 m/s Generator speed: 7.0 RPM, Pitch angle: 0.7 deg, Power: 11708.6 kW, Est. wind Speed: 9.9 m/s Generator speed: 7.0 RPM, Pitch angle: 0.8 deg, Power: 11342.5 kW, Est. wind Speed: 9.5 m/s Generator speed: 6.5 RPM, Pitch angle: 0.0 deg, Power: 10109.3 kW, Est. wind Speed: 9.3 m/s Generator speed: 6.2 RPM, Pitch angle: 0.0 deg, Power: 8736.6 kW, Est. wind Speed: 8.6 m/s Generator speed: 5.6 RPM, Pitch angle: 0.0 deg, Power: 6887.8 kW, Est. wind Speed: 8.0 m/s Generator speed: 5.0 RPM, Pitch angle: 0.0 deg, Power: 5063.7 kW, Est. wind Speed: 7.2 m/s Generator speed: 4.8 RPM, Pitch angle: 0.0 deg, Power: 4207.8 kW, Est. wind Speed: 7.0 m/s Generator speed: 4.8 RPM, Pitch angle: 0.2 deg, Power: 3890.1 kW, Est. wind Speed: 7.0 m/s Generator speed: 4.9 RPM, Pitch angle: 0.3 deg, Power: 3859.8 kW, Est. wind Speed: 6.8 m/s Generator speed: 5.1 RPM, Pitch angle: 0.4 deg, Power: 4548.8 kW, Est. wind Speed: 7.4 m/s Generator speed: 5.6 RPM, Pitch angle: 0.5 deg, Power: 5518.6 kW, Est. wind Speed: 7.6 m/s Generator speed: 5.5 RPM, Pitch angle: 0.0 deg, Power: 5465.2 kW, Est. wind Speed: 7.7 m/s Total Real Time: 12.07 hours Total CPU Time: 4.1971 hours Simulation CPU Time: 4.1969 hours Simulated Time: 0.27778 hours Time Ratio (Sim/CPU): 6.61871E-02 OpenFAST terminated normally. ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [December 6, 2023, 1:35pm UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/4 "2023-12-06T13:35:35Z")
Dear @Xiang.Wang, It looks like your OpenFAST simulation is completing normally. The ElastoDyn blade-root outputs are zeroed in your case because you are running a simulation with the blade structural dynamics modeled in BeamDyn rather than in ElastoDyn. In this case, you can find the proper blade reaction loads in the BeamDyn output instead. Best regards, ---
**Author:** ![Xiang.Wang](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/xiang.wang/32/6604_2.png) [@Xiang.Wang](https://forums.nlr.gov/u/Xiang.Wang)\ **Post date:** [December 7, 2023, 3:15pm UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/5 "2023-12-07T15:15:21Z")
Dear @Jason.Jonkman Thank you for your answer，I found a lot of meaningful output data in BeamDyn. But at the same time, I also discovered a problem，I am currently exploring the BeanDyn nodal output module. I noticed that you and another colleague have already discussed this issue on July. He mentioned that when sets “kp\_total”=“station\_total”=50, a maximum of 50 results can be output. But when I set “kp\_total”=50, only 41 node outputs were obtained. After setting “kp\_total”=“station\_total”=50, OPENFAST reported an error. What do you think may be the reasons for the above problem? below is my OPENFAST running process. OpenFAST Copyright (C) 2023 National Renewable Energy Laboratory Copyright (C) 2023 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. * * * OpenFAST-Unversioned from 18704086dad861ab13daf804825da7c4b8d59428 Compile Info: - Compiler: Intel(R) Fortran Compiler 2021 - Architecture: 64 bit - Precision: single - OpenMP: No - Date: Feb 18 2023 - Time: 12:16:53 Execution Info: - Date: 12/07/2023 - Time: 18:27:02+0800 OpenFAST input file heading: IEA 15 MW offshore reference model on UMaine VolturnUS-S semi-submersible floating platform Running ElastoDyn. Nodal outputs section of ElastoDyn input file not found or improperly formatted. Running BeamDyn. FAST\_InitializeAll:BD\_Init:BD\_ReadInput:BD\_ReadBladeFile:Premature EOF for file “.\IEA-15-240-RWT\_BeamDyn\_Blade.dat” occurred while trying to read station\_eta. BD\_ReadBladeFile:Premature EOF for file “.\IEA-15-240-RWT\_BeamDyn\_Blade.dat” occurred while trying to read siffness\_matrix. BD\_ReadBladeFile:Premature EOF for file “.\IEA-15-240-RWT\_BeamDyn\_Blade.dat” occurred while trying to read siffness\_matrix. BD\_ReadBladeFile:Premature EOF for file “.\IEA-15-240-RWT\_BeamDyn\_Blade.dat” occurred while trying to read siffness\_matrix. BD\_ReadBladeFile:Premature EOF for file “.\IEA-15-240-RWT\_BeamDyn\_Blade.dat” occurred while trying to read siffness\_matrix. BD\_ReadBladeFile:Premature EOF for file “.\IEA-15-240-RWT\_BeamDyn\_Blade.dat” occurred while trying to read siffness\_matrix. BD\_ReadBladeFile:Premature EOF for file “.\IEA-15-240-RWT\_BeamDyn\_Blade.dat” occurred while trying to read siffness\_matrix. OpenFAST encountered an error during module initialization. Simulation error level: FATAL ERROR Aborting OpenFAST. ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [December 7, 2023, 5:02pm UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/6 "2023-12-07T17:02:53Z")
Dear @Xiang.Wang, I’m not sure I fully understand your question, but the key points and stations are independent things in BeamDyn. The key points define the reference curve/axis of the beam. The stations define the beam properties relative to the reference curve/axis. `kp_total` and `station_total` can be set independently, but you must have `kp_total` number of lines in the key point definition in the BeamDyn primary input file and `station_total` number of sectional properties in the BeamDyn blade input file. When using trapezoidal quadrature, the number of nodal outputs is tied to `station_total`. The error you are receiving implies that you changed `station_total` without changing the number of sectional properties. Best regards, ---
**Author:** ![Xiang.Wang](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/xiang.wang/32/6604_2.png) [@Xiang.Wang](https://forums.nlr.gov/u/Xiang.Wang)\ **Post date:** [December 8, 2023, 3:56am UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/7 "2023-12-08T03:56:53Z")
Dear @Jason.Jonkman Thank you for your reply，I think I understand the meaning of “kp\_total” and “station\_total”. But now another question arises, you mentioned that when using trapezoidal quadrature, the number of nodal outputs is tied to “station\_total”, I followed the initial values and set “kp\_total” =50,“station\_total”=21, then OPENFAST can terminate nomarly, but I can get 41 nodal outputs, for example, the parameter Fxr for blade 1, I can get outputs from B1N001\_Fxr to B1N041\_Fxr. Is the problem mentioned above a normal phenomenon? How can I know the position of these 41 calculation points in the blade？ Best regards, ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [December 8, 2023, 1:45pm UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/8 "2023-12-08T13:45:52Z")
Dear @Xiang.Wang, I said that the “when using trapezoidal quadrature, the number of nodal outputs is _tied to_ `station_total`”; I didn’t say that the number of nodal outputs _equals_ `station_total`. You can increase the resolution of the analysis/output nodes by setting BeamDyn input parameter `refine` greater than unity. I’m assuming you are setting `refine`=2, which will subdivide the gap between each station by 2, adding `station_total`-1 number of nodes, so, the total number of nodes in this case would be 2\*`station_total`-1. Best regards, ---
**Author:** ![Xiang.Wang](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/xiang.wang/32/6604_2.png) [@Xiang.Wang](https://forums.nlr.gov/u/Xiang.Wang)\ **Post date:** [December 9, 2023, 12:55am UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/9 "2023-12-09T00:55:22Z")
Dear @Jason.Jonkman Thank you for your patient guidance. I understand this problem now. Best regards, ---
**Author:** ![Yangyang.Li](https://avatars.discourse-cdn.com/v4/letter/y/50afbb/32.png) [@Yangyang.Li](https://forums.nlr.gov/u/Yangyang.Li)\ **Post date:** [September 18, 2024, 2:03pm UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/10 "2024-09-18T14:03:03Z")
Dear @Jason.Jonkman I am currently studying the ElastoDyn module of the OpenFAST v3.5.3 with my case set as CompElast=1 and CompAero=2. However, I have encountered the following three issues during my study: 1. OpenFAST displayed two errors in the output window: “Nodal outputs section of ElastoDyn input file not found or improperly formatted.” (marked as ERR below), and, “AD15 Nodal Outputs: Nodal output section of AeroDyn input file not found or improperly formatted. Skipping nodal outputs,” as shown in the figure below. I wonder why these errors occur, and how can I avoid them? 2. I used Visual Studio 2022 to analyze the OpenFAST source codes where the above errors occurred. The ERR appears at line 255 in FAST\_Subs.f90, as shown in the figure below. However, when I tried to step into the subroutine ED\_Init by the “Step into” command in debug mode, the program skipped directly to the next command at line 257, so I couldn’t analyze the cause of the ERR from the code. This brings me to my 2nd question: Why can’t I step into the subroutine ED\_Init in debug mode by the “Step into” command? 3. After searching, I located the ED\_Init subroutine, as shown in the figure below. However, when I set some breakpoints inside the subroutine in the ElastoDyn module , I kept getting the message “The breakpoint will not currently be hit.” This leads me to my 3th question: In debug mode, although the ED\_Init subroutine has executed, why is the breakpoint inside the function not working? Best regards, ---
**Author:** ![Jason.Jonkman](https://dub1.discourse-cdn.com/nrel/user_avatar/forums.nlr.gov/jason.jonkman/32/3086_2.png) [@Jason.Jonkman](https://forums.nlr.gov/u/Jason.Jonkman)\ **Post date:** [September 18, 2024, 5:08pm UTC](https://forums.nlr.gov/t/something-wrong-about-openfast-output/6129/11 "2024-09-18T17:08:43Z")
Dear @Yangyang.Li, Here are my responses: 1. You can always ignore warnings about “nodal output” (these are warnings not errors). These simply warn you that you that the nodal output section is not included in your input file(s) (but this section is optional anyway). For more information about the “nodal outputs” of ElastoDyn and AeroDyn, see the documentation on readthedocs: [4.2.7.2. Input Files — OpenFAST v3.5.3 documentation](https://openfast.readthedocs.io/en/main/source/user/elastodyn/input.html#nodal-outputs) and [4.2.1.3. Input Files — OpenFAST v3.5.3 documentation](https://openfast.readthedocs.io/en/main/source/user/aerodyn/input.html#nodal-outputs). 2. I’m not sure why you can’t “Step into” `SUBROUTINE ED_Init()` in the debugger; I would expect that to work. 3. The variable declaration statement is not executable; I would specify a break point after the declaration statements. Best regards,